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1. A proposal for multi-tens of GW fully coherent femtosecond soft X-ray lasers

Author: Pedro Velarde, Julien Gautier, David Ros, Philippe Zeitoun, Lianhe Li, Marta Fajardo, Guillaume Lambert, Eduardo Oliva, T. T. T. Le, Moana Pittman, Stéphane Sebban, Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Instituto de Telecomunicações [Lisboa, Portugal], New York University School of Medicine, NYU System (NYU), LASERIX, Université Paris-Sud - Paris 11 (UP11), Laboratoire de Modélisation et Simulation Multi Echelle (MSME), Université Paris-Est Marne-la-Vallée (UPEM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche des Cordeliers (CRC), Université Pierre et Marie Curie - Paris 6 (UPMC)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire de Sociologie et d'Anthropologie - UFC (UR 3189) (LASA), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Instituto de Fusión Nuclear, Universidad Politécnica de Madrid (UPM), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Paris-Est Marne-la-Vallée (UPEM), Université Pierre et Marie Curie - Paris 6 (UPMC)-École pratique des hautes études (EPHE), Laboratoire de Sociologie et d'Anthropologie - UFC (EA 3189) (LASA), Université Paris Diderot - Paris 7 (UPD7)-École pratique des hautes études (EPHE)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université de Franche-Comté (UFC), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-École Nationale Supérieure de Techniques Avancées (ENSTA Paris), Laboratoire de physique des gaz et des plasmas ( LPGP ), Université Paris-Sud - Paris 11 ( UP11 ) -Centre National de la Recherche Scientifique ( CNRS ), Department of Pathology, New York, NY 10016, USA, Université Paris-Sud - Paris 11 ( UP11 ), Laboratoire de Modélisation et Simulation Multi Echelle ( MSME ), Université Paris-Est Marne-la-Vallée ( UPEM ) -Université Paris-Est Créteil Val-de-Marne - Paris 12 ( UPEC UP12 ) -Centre National de la Recherche Scientifique ( CNRS ), Centre de Recherche des Cordeliers ( CRC ), Université Paris Diderot - Paris 7 ( UPD7 ) -École pratique des hautes études ( EPHE ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Laboratoire de Sociologie et d'Anthropologie - UFC (EA 3189) ( LASA ), Université Bourgogne Franche-Comté [COMUE] ( UBFC ) -Université de Franche-Comté ( UFC ), Universidad Politécnica de Madrid ( UPM ), Laboratoire d'interaction du rayonnement X avec la matière ( LIXAM ), Laboratoire d'optique appliquée ( LOA ), and École Nationale Supérieure de Techniques Avancées ( Univ. Paris-Saclay, ENSTA ParisTech ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS )
Subjects: Chirped pulse amplification, Photon, Astrophysics::High Energy Astrophysical Phenomena, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], 01 natural sciences, law.invention, 010309 optics, Optics, law, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], 0103 physical sciences, [ PHYS.PHYS.PHYS-ACC-PH ] Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], 010306 general physics, Physics, [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS ] Physics [physics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Amplifier, Física, [ PHYS.PHYS.PHYS-PLASM-PH ] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], Plasma, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Harmonics, Picosecond, Femtosecond, Energía Nuclear, business
Abstract: International audience; X-ray free-electron lasers1, 2 delivering up to 1 × 1013 coherent photons in femtosecond pulses are bringing about a revolution in X-ray science3, 4, 5. However, some plasma-based soft X-ray lasers6 are attractive because they spontaneously emit an even higher number of photons (1 × 1015), but these are emitted in incoherent and long (hundreds of picoseconds) pulses7 as a consequence of the amplification of stochastic incoherent self-emission. Previous experimental attempts to seed such amplifiers with coherent femtosecond soft X-rays resulted in as yet unexplained weak amplification of the seed and strong amplification of incoherent spontaneous emission8. Using a time-dependent Maxwell–Bloch model describing the amplification of both coherent and incoherent soft X-rays in plasma, we explain the observed inefficiency and propose a new amplification scheme based on the seeding of stretched high harmonics using a transposition of chirped pulse amplification to soft X-rays. This scheme is able to deliver 5 × 1014 fully coherent soft X-ray photons in 200 fs pulses and with a peak power of 20 GW.
Published: 2012
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2. A modified magnetic bottle electron spectrometer for the detection of multiply charged ions in coincidence with all correlated electrons: decay pathways to Xe 3+ above xenon-4d ionization threshold

Author: I. Ismail, M. A. Khalal, M. Huttula, K. Jänkälä, J.-M. Bizau, D. Cubaynes, Y. Hikosaka, K. Bučar, M. Žitnik, L. Andric, P. Lablanquie, J. Palaudoux, F. Penent, Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), University of Oulu, University of Toyama, Jozef Stefan Institute [Ljubljana] (IJS), Laboratoire de Chimie Théorique (LCT), Université Paris-Est Marne-la-Vallée (UPEM), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: General Physics and Astronomy, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], Physical and Theoretical Chemistry
Abstract: New magnet design of a magnetic bottle electron spectrometer allowing the detection of multiply charged ions in coincidence with n electrons. Electrons spectra obtained without and with filtering by coincidence with Xen+ ions.
Published: 2022
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3. Signs of late infall and possible planet formation around DR Tau using VLT/SPHERE and LBTI/LMIRCam

Author: D. Mesa, C. Ginski, R. Gratton, S. Ertel, K. Wagner, M. Bonavita, D. Fedele, M. Meyer, T. Henning, M. Langlois, A. Garufi, S. Antoniucci, R. Claudi, D. Defrère, S. Desidera, M. Janson, N. Pawellek, E. Rigliaco, V. Squicciarini, A. Zurlo, A. Boccaletti, M. Bonnefoy, F. Cantalloube, G. Chauvin, M. Feldt, J. Hagelberg, E. Hugot, A.-M. Lagrange, C. Lazzoni, D. Maurel, C. Perrot, C. Petit, D. Rouan, A. Vigan, INAF - Osservatorio Astronomico di Padova (OAPD), Istituto Nazionale di Astrofisica (INAF), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), Large Binocular Telescope Observatory [Tucson] (LBTO), Steward Observatory, University of Arizona, University of Edinburgh, Scottish Universities Physics Alliance (SUPA), INAF - Osservatorio Astrofisico di Arcetri (OAA), University of Michigan [Ann Arbor], University of Michigan System, Institute for Particle Physics and Astrophysics [ETH Zürich] (IPA), Department of Physics [ETH Zürich] (D-PHYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Roma (OAR), Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven), Stockholm University, Konkoly Observatory, Research Centre for Astronomy and Earth Sciences [Budapest], Hungarian Academy of Sciences (MTA)-Hungarian Academy of Sciences (MTA), University of Cambridge [UK] (CAM), Universidad Diego Portales [Santiago] (UDP), Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales [Toulouse] (CNES)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France -Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France, Geneva Observatory, Université de Genève = University of Geneva (UNIGE), Universidad de Valparaiso [Chile], DOTA, ONERA, Université Paris Saclay [Châtillon], ONERA-Université Paris-Saclay, This work has made use of the SPHERE Data Center, jointly operated by OSUG/IPAG (Grenoble), PYTHEAS/LAM/CeSAM (Marseille), OCA/Lagrange (Nice) and Observatoire de Paris/LESIA (Paris). This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This work was supported by the PRIN-INAF 2019 Planetary Systems At Early Ages (PLATEA). This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France. D.M., R.G., S.D., A.Z. acknowledge support from the 'Progetti Premiali' funding scheme of the Italian Ministry of Education, University, and Research. A.Z. acknowledges support from the CONICYT + PAI/Convocatoria nacional subvención a la instalación en la academia, convocatoria 2017 + Folio PAI77170087. A.M. acknowledges the support of the DFG priority program SPP 1992 'Exploring the Diversity of Extrasolar Planets' (MU 4172/1-1). C.P. acknowledges financial support from Fondecyt (grant 3 190 691) and financial support from the ICM (Iniciativa Científica Milenio) via the Núcleo Milenio de Formación Planetaria grant, from the Universidad de Valparaíso. T.H. acknowledges support from the European Research Council under the Horizon 2020 Framework Program via the ERC Advanced Grant Origins 83 24 28. SPHERE is an instrument designed and built by a consortium consisting of IPAG (Grenoble, France), MPIA (Heidelberg, Germany), LAM (Marseille, France), LESIA (Paris, France), Laboratoire Lagrange (Nice, France), INAF-Osservatorio di Padova (Italy), Observatoire de Genève (Switzerland), ETH Zurich (Switzerland), NOVA (Netherlands), ONERA (France) and ASTRON (Netherlands), in collaboration with ESO. SPHERE was funded by ESO, with additional contributions from CNRS (France), MPIA (Germany), INAF (Italy), FINES (Switzerland) and NOVA (Netherlands). SPHERE also received funding from the European Commission Sixth and Seventh Framework Programmes as part of the Optical Infrared Coordination Network for Astronomy (OPTICON) under grant number RII3-Ct-2004-001566 for FP6 (2004–2008), grant number 226604 for FP7 (2009–2012) and grant number 312430 for FP7 (2013–2016). The LBT is an international collaboration among institutions in the United States, Italy and Germany. LBT Corporation partners are: The University of Arizona on behalf of the Arizona Board of Regents, Istituto Nazionale di Astrofisica, Italy, LBT Beteiligungsgesellschaft, Germany, representing the Max-Planck Society, The Leibniz Institute for Astrophysics Potsdam, and Heidelberg University, The Ohio State University, representing OSU, University of Notre Dame, University of Minnesota and University of Virginia. The results reported herein benefited from collaborations and/or information exchange within NASA’s Nexus for Exoplanet System Science (NExSS) research coordination network sponsored by NASA’s Science Mission Directorate. K.W. acknowledges support from NASA through the NASA Hubble Fellowship grant HST-HF2-51472.001-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26 555., European Project: 832428, Department of Biochemistry and Molecular Biology, Mayo Clinic, Leiden Observatory [Leiden], Universiteit Leiden [Leiden], Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)
Subjects: 010504 meteorology & atmospheric sciences, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Computer Science::Digital Libraries, Planet, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, Adaptive optics -instrumentation, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, 0105 earth and related environmental sciences, Physics, Earth and Planetary Astrophysics (astro-ph.EP), Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Imaging spectroscopy, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, Physics::Space Physics, Data analysis - methods, Astrophysics::Earth and Planetary Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Earth and Planetary Astrophysics
Abstract: Context. Protoplanetary disks around young stars often contain substructures like rings, gaps, and spirals that could be caused by interactions between the disk and forming planets. Aims. We aim to study the young (1-3 Myr) star DR Tau in the near-infrared and characterize its disk, which was previously resolved through sub-millimeter interferometry with ALMA, and to search for possible sub-stellar companions embedded into it. Methods. We observed DR Tau with VLT/SPHERE both in polarized light (H broad band) and total intensity (in Y, J, H, and K spectral bands). We also performed L' band observations with LBTI/LMIRCam on the Large Binocular Telescope (LBT). Results. We found two previously undetected spirals extending north-east and south of the star, respectively. We further detected an arc-like structure north of the star. Finally a bright, compact and elongated structure was detected at separation of 303 +/- 10 mas and position angle 21.2 +/- 3.7 degrees, just at the root of the north-east spiral arm. Since this feature is visible both in polarized light and in total intensity and has a flat spectrum it is likely caused by stellar light scattered by dust. Conclusions. The two spiral arms are at different separation from the star, have very different pitch angles, and are separated by an apparent discontinuity, suggesting they might have a different origin. The very open southern spiral arm might be caused by infalling material from late encounters with cloudlets into the formation environment of the star itself. The compact feature could be caused by interaction with a planet in formation still embedded in its dust envelope and it could be responsible for launching the north-east spiral. We estimate a mass of the putative embedded object of the order of few M_Jup ., 13 pages, 11 Figures. Accepted for publications on A&A
Published: 2022
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4. Personality dimensions could be predictive of quality-of-life outcome after deep brain stimulation of the sub-thalamic nucleus in Parkinson's

Author: Boussac, M., Danaila, T., Eusebio, A., Hainque, E., Corvol, J. C., Rascol, O., Moreau, C., Rolland, A. S., Devos, D., Ansquer, S., Boukbiza, O. L., Marques, A. R., Maltete, D., Drapier, S., Jarraya, B., Belamri, L., Burbaud, P., Meyer, M., Rouaud, T., Giordana, B., Tir, Mélissa, Brefel-Courbon, C., Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, Assistance Publique - Hôpitaux de Marseille (APHM), Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre d'investigation clinique de Toulouse (CIC 1436), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Pôle Santé publique et médecine publique [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Environnement, Ville, Société (EVS), École normale supérieure de Lyon (ENS de Lyon)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-École Nationale des Travaux Publics de l'État (ENTPE)-École nationale supérieure d'architecture de Lyon (ENSAL)-Centre National de la Recherche Scientifique (CNRS), Troubles cognitifs dégénératifs et vasculaires - U 1171 - EA 1046 (TCDV), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille, Droit et Santé-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Service de neurologie [Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU), École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), CHU Amiens-Picardie, Laboratoire de Neurosciences Fonctionnelles et Pathologies - UR UPJV 4559 (LNFP), Université de Picardie Jules Verne (UPJV), Troubles cognitifs dégénératifs et vasculaires - U 1171 (TCDV), and Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille)
Subjects: [SDV]Life Sciences [q-bio], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2021

5. Highly multimodal structure of high topological charge extreme ultraviolet vortex beams

Author: F. Sanson, O. Guilbaud, Fabrice Harms, Martin Richardson, Wensong Li, Ph. Balcou, David Ros, Eric G. Johnson, Moana Pittman, J. Demailly, O. Neveu, Guillaume Dovillaire, A. K. Pandey, Irene Papagiannouli, Elsa Baynard, Sophie Kazamias, Bruno Lucas, Physical Research Laboratory [Ahmedabad] (PRL), Indian Space Research Organisation (ISRO), Imagine Optic, AFOP, Centre Laser de l'Université Paris Sud (CLUPS), Université Paris-Sud - Paris 11 (UP11), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Laboratoire des collisions atomiques et moléculaires (LCAM), LASERIX, Center for Research and Education in Optics and Lasers (CREOL), University of Central Florida [Orlando] (UCF), CFD Lab [Montréal], Department of Mechanical Engineering [Montréal], McGill University = Université McGill [Montréal, Canada]-McGill University = Université McGill [Montréal, Canada], Centre d'Etudes Lasers Intenses et Applications (CELIA), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB), and Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, [PHYS]Physics [physics], Angular momentum, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, 02 engineering and technology, Wavefront sensor, 021001 nanoscience & nanotechnology, 01 natural sciences, Atomic and Molecular Physics, and Optics, Deformable mirror, Vortex, 010309 optics, Optics, 13. Climate action, Extreme ultraviolet, 0103 physical sciences, Physics::Accelerator Physics, Light beam, Physics::Atomic Physics, 0210 nano-technology, business, Topological quantum number, Beam (structure)
Abstract: International audience; Optische Strahlen mit Orbital Angular Momentum (OAM) sind ein sehr aktives Forschungsfeld für ihre prospektiven Anwendungen, insbesondere bei kurzen Wellenlängen. Wir betrachten hier solche Strahlen, die durch hochharmonische Erzeugung (HHG) in einem seltenen Gas erzeugt werden, und analysieren die Charakterisierung ihrer Hochladungs-Wirbelstruktur durch einen EUV (Extreme UltraViolet) Hartmann-Wellenfrontsensor. Wir zeigen, dass solche HHG-Strahlen in der Regel aus einer Reihe von zahlreichen Vortex-Modi bestehen. Die Empfindlichkeit der Intensität und Phase des HHG-Strahls auf die infraroten (IR) Laseraberrationen wird mit einem deformierbaren Spiegel untersucht.; Optical beams carrying Orbital Angular Momentum (OAM) are a very active field of research for their prospective applications, especially at short wavelengths. We consider here such beams produced through high-harmonic generation (HHG) in a rare gas and analyze the characterization of their high charge vortex structure by an EUV (Extreme UltraViolet) Hartmann wavefront sensor. We show that such HHG beams are generally composed of a set of numerous vortex modes. The sensitivity of the intensity and phase of the HHG beam to the infrared (IR) laser aberrations is investigated using a deformable mirror.; Les faisceaux optiques portant un Moment Angulaire Orbital (OAM) font l'objet de recherches très actives,en raison de l'intérêt de leurs applications potentielles, particulièrement à courtes longueurs d'onde. Nous nous intéressons ici à des faisceaux produits par Génération d'Harmoniques d'Ordre Elevé (HOE) dans un gaz rare, et analysons la structure du vortex de haute charge grâce à la caractérisation complète obtenue par un capteur de front d'onde de type Hartmann dans l'Extrême UltraViolet (EUV). Nous montrons que ces faisceaux HOE sont généralement constitués d'un ensemble de nombreux modes de vortex. Un miroir déformable nous permet d'étudier la sensibilité de l'éclairement et de la phase du faisceau HOE vis à vis des aberrations du laser infrarouge (IR).
Published: 2020
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6. Highly multimodal structure of high topological charge extreme ultraviolet vortex beams

Author: SANSON, F., PANDEY, A., PAPAGIANNOULI, I., HARMS, F., DOVILLAIRE, G., BAYNARD, E., DEMAILLY, J., GUILBAUD, O., LUCAS, B., NEVEU, O., PITTMAN, M., ROS, D., RICHARDSON, M., JOHNSON, E., LI, W., BALCOU, P., KAZAMIAS, S., Physical Research Laboratory [Ahmedabad] (PRL), Indian Space Research Organisation (ISRO), Imagine Optic, AFOP, Centre Laser de l'Université Paris Sud (CLUPS), Université Paris-Sud - Paris 11 (UP11), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Laboratoire des collisions atomiques et moléculaires (LCAM), LASERIX, Center for Research and Education in Optics and Lasers (CREOL), University of Central Florida [Orlando] (UCF), CFD Lab [Montréal], Department of Mechanical Engineering [Montréal], McGill University = Université McGill [Montréal, Canada]-McGill University = Université McGill [Montréal, Canada], Centre d'Etudes Lasers Intenses et Applications (CELIA), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB)
Subjects: [PHYS]Physics [physics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
Abstract: International audience; Optische Strahlen mit Orbital Angular Momentum (OAM) sind ein sehr aktives Forschungsfeld für ihre prospektiven Anwendungen, insbesondere bei kurzen Wellenlängen. Wir betrachten hier solche Strahlen, die durch hochharmonische Erzeugung (HHG) in einem seltenen Gas erzeugt werden, und analysieren die Charakterisierung ihrer Hochladungs-Wirbelstruktur durch einen EUV (Extreme UltraViolet) Hartmann-Wellenfrontsensor. Wir zeigen, dass solche HHG-Strahlen in der Regel aus einer Reihe von zahlreichen Vortex-Modi bestehen. Die Empfindlichkeit der Intensität und Phase des HHG-Strahls auf die infraroten (IR) Laseraberrationen wird mit einem deformierbaren Spiegel untersucht.; Optical beams carrying Orbital Angular Momentum (OAM) are a very active field of research for their prospective applications, especially at short wavelengths. We consider here such beams produced through high-harmonic generation (HHG) in a rare gas and analyze the characterization of their high charge vortex structure by an EUV (Extreme UltraViolet) Hartmann wavefront sensor. We show that such HHG beams are generally composed of a set of numerous vortex modes. The sensitivity of the intensity and phase of the HHG beam to the infrared (IR) laser aberrations is investigated using a deformable mirror.; Les faisceaux optiques portant un Moment Angulaire Orbital (OAM) font l'objet de recherches très actives,en raison de l'intérêt de leurs applications potentielles, particulièrement à courtes longueurs d'onde. Nous nous intéressons ici à des faisceaux produits par Génération d'Harmoniques d'Ordre Elevé (HOE) dans un gaz rare, et analysons la structure du vortex de haute charge grâce à la caractérisation complète obtenue par un capteur de front d'onde de type Hartmann dans l'Extrême UltraViolet (EUV). Nous montrons que ces faisceaux HOE sont généralement constitués d'un ensemble de nombreux modes de vortex. Un miroir déformable nous permet d'étudier la sensibilité de l'éclairement et de la phase du faisceau HOE vis à vis des aberrations du laser infrarouge (IR).
Published: 2020
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7. Core-hole spectator Auger decay

Author: S. Guilbaud, Yasumasa Hikosaka, Jean-Marc Bizau, Kari Jänkälä, Jérôme Palaudoux, Klemen Bučar, Francis Penent, Marko Huttula, M. A. Khalal, Tatsuo Kaneyasu, Denis Cubaynes, Lidija Andric, Kenji Ito, Pascal Lablanquie, Matjaž Žitnik, University of Oulu, Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie Théorique (LCT), Université Paris-Est Marne-la-Vallée (UPEM), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Jozef Stefan Institute [Ljubljana] (IJS), SAGA Light Source, and University of Toyama
Subjects: [PHYS]Physics [physics], Physics, Auger electron spectroscopy, Astrophysics::High Energy Astrophysical Phenomena, Electron, 01 natural sciences, Outer core, 010305 fluids & plasmas, Auger, Ion, PACS numbers: 32.80.Hd, 31.25.Jf, 32.80.−t, Atomic orbital, 0103 physical sciences, Emission spectrum, Decay chain, Atomic physics, 010306 general physics
Abstract: For an atomic state with two electrons missing from different core orbitals one may assume that the deeper hole decays first. However, it is quite probable that the double core-hole state will decay by emission of a slow Auger electron where the deeper core hole remains a spectator, especially if the outer core hole can be filled by Coster-Kronig transition, while the deeper cannot. We study here the competition of both Auger decay channels in a model system, the $1s2s2{p}^{6}(3s/3p)$ states of $\mathrm{N}{\mathrm{e}}^{+}$ ions. As the phenomenon can take place in any decay chain involving multiple core-excited states it can be critical to understand the ion yields, the electron and x-ray emission spectra, and the molecular fragmentation.
Published: 2020
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8. Control of H 2 Dissociative Ionization in the Nonlinear Regime Using Vacuum Ultraviolet Free-Electron Laser Pulses

Author: Holzmeier, F., Bello, R. Y., Hervé, M., Achner, A., Baumann, T. M., Meyer, M., Finetti, P., Di Fraia, M., Gauthier, D., Roussel, E., Plekan, O., Richter, R., Prince, K. C., Callegari, C., Bachau, H., Palacios, A., Martin, F., Dowek, D., INFM-Dipartimento di Fisica-Politecnico di Milano, Istituto Nazionale di Fisica Nucleare (INFN), Museum d'Aquitaine, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Cancérologie de Marseille (CRCM), Aix Marseille Université (AMU)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Università degli studi di Trieste = University of Trieste, Chimie Et Interdisciplinarité : Synthèse, Analyse, Modélisation (CEISAM), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Biologie et écologie tropicale et méditerranéenne [2007-2010] (BETM), Université de Perpignan Via Domitia (UPVD)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Sincrotrone Trieste, Centre d'Etudes Lasers Intenses et Applications (CELIA), Université de Bordeaux (UB)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des collisions atomiques et moléculaires (LCAM), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Aix Marseille Université (AMU), Univ Trieste, Dept Phys, I-34127 Trieste, Italy, Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Université de Perpignan Via Domitia (UPVD)-École pratique des hautes études (EPHE), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Bordeaux (UB)
Subjects: [PHYS]Physics [physics], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2018
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9. Investigating the young solar system analog HD 95086

Author: Chauvin, G., Gratton, R., Bonnefoy, M., Lagrange, A. -M, Boer, J., Arthur Vigan, Beust, H., Lazzoni, C., Boccaletti, A., Galicher, R., Desidera, S., Delorme, P., Keppler, M., Lannier, J., Maire, A. -L, Mesa, D., Meunier, N., Kral, Q., Henning, T., Menard, F., Moor, A., Avenhaus, H., Bazzon, A., Janson, M., Beuzit, J. -L, Bhowmik, T., Bonavita, M., Borgniet, S., Brandner, W., Cheetham, A., Cudel, M., Feldt, M., Fontanive, C., Ginski, C., Hagelberg, J., Janin-Potiron, P., Lagadec, E., Langlois, M., Le Coroller, H., Messina, S., Meyer, M., Mouillet, D., Peretti, S., Perrot, C., Rodet, L., Samland, M., Sissa, E., Olofsson, J., Salter, G., Schmidt, T., Zurlo, A., Milli, J., Boekel, R., Quanz, S., Wilson, P. A., Feautrier, P., Le Mignant, D., Perret, D., Ramos, J., Rochat, S., Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Centre National d'Études Spatiales [Toulouse] (CNES)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Padova (OAPD), Istituto Nazionale di Astrofisica (INAF), Leiden Observatory [Leiden], Universiteit Leiden [Leiden], Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, Universidad de Chile (UCHILE), Institute for Astronomy [Zürich], Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology in Zürich [Zürich] (ETH Zürich), Department of Astronomy, Stockholm University, Observatoire Astronomique de l'Université de Genève (ObsGE), Université de Genève (UNIGE), Institute for Astronomy [Edinburgh] (IfA), University of Edinburgh, Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Observatoire de Haute-Provence (OHP), Institut Pythéas (OSU PYTHEAS), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut de Recherche pour le Développement (IRD), INAF - Osservatorio Astrofisico di Catania (OACT), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), European Southern Observatory (ESO), Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), Institute of Astronomy [ETH Zürich], Department of Physics [ETH Zürich] (D-PHYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology in Zürich [Zürich] (ETH Zürich)-Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology in Zürich [Zürich] (ETH Zürich), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Universidad de Chile = University of Chile [Santiago] (UCHILE), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Centre National de la Recherche Scientifique (CNRS), Universiteit Leiden, Université de Genève = University of Geneva (UNIGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), and We acknowledge financial support from the Programme National de Planétologie (PNP) and the Programme National de Physique Stellaire (PNPS) of CNRS-INSU. This work has also been supported by a grant from the French Labex OSUG@2020 (Investissements d’avenir – ANR10 LABX56). The project is supported by CNRS, by the Agence Nationale de la Recherche (ANR-14-CE33-0018).A (Germany), INAF (Italy), FINES (Switzerland) and NOVA (Netherlands). SPHERE also received funding from the European Commission Sixth and Seventh Framework Programmes as part of the Optical Infrared Coordination Network for Astronomy (OPTICON) under grant number RII3-Ct-2004-001566 for FP6 (2004–2008), grant number 226604 for FP7 (2009–2012) and grant number 312430 for FP7 (2013–2016).
Subjects: Earth and Planetary Astrophysics (astro-ph.EP), [PHYS]Physics [physics], Astrophysics::Solar and Stellar Astrophysics, FOS: Physical sciences, Astrophysics::Earth and Planetary Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics::Galaxy Astrophysics, ComputingMilieux_MISCELLANEOUS, Astrophysics - Earth and Planetary Astrophysics
Abstract: HD95086 (A8V, 17Myr) hosts a rare planetary system for which a multi-belt debris disk and a giant planet of 4-5MJup have been directly imaged. Our study aims to characterize the physical and orbital properties of HD95086b, search for additional planets at short and wide orbits and image the cold outer debris belt in scattered light. We used HARPS at the ESO 3.6m telescope to monitor the radial velocity of HD95086 over 2 years and investigate the existence of giant planets at less than 3au orbital distance. With the IRDIS dual-band imager and the IFS integral field spectrograph of SPHERE at VLT, we imaged the faint circumstellar environment beyond 10au at six epochs between 2015 and 2017. We do not detect additional giant planets around HD95086. We identified the nature (bound companion or background contaminant) of all point-like sources detected in the IRDIS field of view. None of them correspond to the ones recently discovered near the edge of the cold outer belt by ALMA. HD95086b is resolved for the first time in J-band with IFS. Its near-infrared spectral energy distribution is well fitted by a few dusty and/or young L7-L9 dwarf spectral templates. The extremely red 1-4um spectral distribution is typical of low-gravity objects at the L/T spectral type transition. The planet's orbital motion is resolved between January 2015 and May 2017. Together with past NaCo measurements properly re-calibrated, our orbital fitting solutions favor a retrograde low to moderate-eccentricity orbit e=0.2 (0.0 to 0.5), with a semi-major axis 52au corresponding to orbital periods of 288$ yrs and an inclination that peaks at i = 141deg, which is compatible with a planet-disk coplanar configuration. Finally, we report the detection in polarimetric differential imaging of the cold outer debris belt between 100 and 300au, consistent in radial extent with recent ALMA 1.3mm resolved observations., Comment: 23 pages, 19 figures, accepted in A&A (Dec 28th, 2017)
Published: 2018
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10. Investigation of the inner structures around HD169142 with VLT/SPHERE

Author: A. Pohl, Th. Henning, S. Peretti, Matthias Samland, Myriam Benisty, Sascha P. Quanz, Francois Menard, Anne-Lise Maire, J. de Boer, L. Weber, Philippe Delorme, Daniela Fantinel, Julien Girard, Ch. Ginski, Anthony Cheetham, Arthur Vigan, Paola Pinilla, Tomas Stolker, T. Fusco, Raphaël Galicher, T. Kopytova, Roxanne Ligi, Raffaele Gratton, Gael Chauvin, Silvano Desidera, Cecile Gry, Francois Wildi, Thibaut Moulin, Zahed Wahhaj, Markus Janson, M. Cudel, Beth Biller, Anne-Marie Lagrange, Marcos Suarez, H. LeCoroller, E. Sissa, M. Bonnefoy, M. Kasper, Joany Andreina Manjarres Ramos, C. Perrot, Maud Langlois, Dino Mesa, Tristan Buey, Michael Meyer, M. Feldt, A. Boccaletti, Alice Zurlo, J. L. Beuzit, M. Jaquet, D. Rouan, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astronomico di Padova (OAPD), Istituto Nazionale di Astrofisica (INAF), Leiden Observatory [Leiden], Universiteit Leiden, Institut de Planétologie et d'Astrophysique de Grenoble (IPAG), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institute of Astronomy [ETH Zürich], Department of Physics [ETH Zürich] (D-PHYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), University of Michigan [Ann Arbor], University of Michigan System, Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, Institute for Astronomy [Edinburgh] (IfA), University of Edinburgh, Observatoire Astronomique de l'Université de Genève (ObsGE), Université de Genève = University of Geneva (UNIGE), Sydney Institute for Astronomy (SIfA), The University of Sydney, European Southern Observatory [Santiago] (ESO), European Southern Observatory (ESO), Department of Astronomy, Stockholm University, ASU School of Earth and Space Exploration (SESE), Arizona State University [Tempe] (ASU), Ural Federal University [Ekaterinburg] (UrFU), Centre de Recherche Astrophysique de Lyon (CRAL), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), University of Arizona, Heidelberg University, Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), Universidad Diego Portales [Santiago] (UDP), Millennium Nucleus Protoplanetary Disk, ONERA - The French Aerospace Lab [Châtillon], ONERA-Université Paris Saclay (COmUE), ANR-16-CE31-0013,PLANET-FORMING-DISKS,De meilleurs modèles pour de meilleures données(2016), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Universiteit Leiden [Leiden], Université de Genève (UNIGE), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Stockholm Observatory Department of Astronomy, ESO, Physics Department [Garching], Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM)-Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM), IRD, Geneva Observatory, University of Geneva [Switzerland], Franche-Comté Électronique Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) (FEMTO-ST), Université de Technologie de Belfort-Montbeliard (UTBM)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Imagerie Tomographique et Radiothérapie, Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université Jean Monnet [Saint-Étienne] (UJM)-Hospices Civils de Lyon (HCL)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Jean Monnet [Saint-Étienne] (UJM)-Hospices Civils de Lyon (HCL)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), André, Cécile, Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Belfort-Montbeliard (UTBM), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Laboratoire d'Astrophysique de Grenoble (LAOG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology in Zürich [Zürich] (ETH Zürich)-Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology in Zürich [Zürich] (ETH Zürich), Centre National d'Études Spatiales [Toulouse] (CNES)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Technical University of Munich (TUM)-Technical University of Munich (TUM), Université de Franche-Comté (UFC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Mécanique et des Microtechniques (ENSMM)-Université de Technologie de Belfort-Montbeliard (UTBM), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon), and ONERA
Subjects: INDIVIDUAL, [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, TELESCOPE, Infrared, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, OPTIQUE ADAPTATIVE, 01 natural sciences, law.invention, DETECTION, Telescope, Integral field spectrograph, Planet, law, 0103 physical sciences, TECHNIQUES, Astrophysics::Solar and Stellar Astrophysics, PLANETS AND SATELLITES, 010306 general physics, 010303 astronomy & astrophysics, Spectrograph, [PHYS.PHYS.PHYS-SPACE-PH] Physics [physics]/Physics [physics]/Space Physics [physics.space-ph], ComputingMilieux_MISCELLANEOUS, Astrophysics::Galaxy Astrophysics, HD169142, [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing, EXOPLANETE, Earth and Planetary Astrophysics (astro-ph.EP), Physics, [PHYS]Physics [physics], PROTOPLANETARY DISC, HIGH ANGULAR RESOLUTION, Astronomy and Astrophysics, Position angle, Exoplanet, FORMATION, [PHYS.PHYS.PHYS-SPACE-PH]Physics [physics]/Physics [physics]/Space Physics [physics.space-ph], Stars, Space and Planetary Science, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Astrophysics::Earth and Planetary Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, STARS, Astrophysics - Earth and Planetary Astrophysics
Abstract: We present observations of the Herbig Ae star HD169142 with VLT/SPHERE instruments InfraRed Dual-band Imager and Spectrograph (IRDIS) ($K1K2$ and $H2H3$ bands) and the Integral Field Spectrograph (IFS) ($Y$, $J$ and $H$ bands). We detect several bright blobs at $\sim$180 mas separation from the star, and a faint arc-like structure in the IFS data. Our reference differential imaging (RDI) data analysis also finds a bright ring at the same separation. We show, using a simulation based on polarized light data, that these blobs are actually part of the ring at 180 mas. These results demonstrate that the earlier detections of blobs in the $H$ and $K_S$ bands at these separations in Biller et al. as potential planet/substellar companions are actually tracing a bright ring with a Keplerian motion. Moreover, we detect in the images an additional bright structure at $\sim$93 mas separation and position angle of 355$^{\circ}$, at a location very close to previous detections. It appears point-like in the $YJ$ and $K$ bands but is more extended in the $H$ band. We also marginally detect an inner ring in the RDI data at $\sim$100 mas. Follow-up observations are necessary to confirm the detection and the nature of this source and structure., 11 pages, 7 figures, 2 tables; published in MNRAS (this version includes proofs corrections)
Published: 2018
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11. 3FHL: The Third Catalog of Hard Fermi-LAT Sources

Author: Igor V. Moskalenko, Lukasz Stawarz, Olaf Reimer, Seb. Funk, Diego F. Torres, Nicola Omodei, M. Razzano, M.-H. Grondin, Filippo D'Ammando, C. Favuzzi, M. Caragiulo, Alessandro Cuoco, E. J. Siskind, Jean Ballet, R. A. Cameron, F. Piron, Stefano Ciprini, J. M. Cohen, Alice K. Harding, M. N. Mazziotta, Seth Digel, Francesco Longo, R. Desiante, S. Cutini, A. A. Moiseev, Elliott D. Bloom, Jingcheng Li, Pascal Bruel, R. Buehler, F. Spada, D. Horan, Aaron Dominguez, Stefan Larsson, Marco Ajello, J. B. Thayer, F. Loparco, Peter F. Michelson, Marcello Giroletti, C. C. Cheung, N. Di Lalla, M. Di Mauro, Luca Baldini, M. Takahashi, T. Reposeur, Benoit Lott, Roger Blandford, P. Fusco, Sara Buson, D. J. Thompson, M. Palatiello, R. J. Britto, John W. Hewitt, F. de Palma, Sylvain Guiriec, R. Bonino, S. J. Fegan, A. Reimer, T. A. Porter, Matthew Wood, Johan Bregeon, Giacomo Principe, E. Orlando, Julie McEnery, Kent S. Wood, F. Gargano, Nestor Mirabal, P. Fortin, Soebur Razzaque, Luca Latronico, Giacomo Vianello, G. La Mura, Elizabeth C. Ferrara, J. G. Thayer, Regina Caputo, D. Costantin, D. Dumora, A. Chekhtman, P. Lubrano, W. B. Atwood, Ronaldo Bellazzini, Vaidehi S. Paliya, M. E. Monzani, J. S. Perkins, Nicola Giglietto, E. Hays, Anna Franckowiak, S. Rainò, Tsunefumi Mizuno, G. Chiaro, P. A. Caraveo, J. E. Grove, Yasushi Fukazawa, Persis S. Drell, J. D. Magill, Eric Charles, Manuel Meyer, D. J. Suson, Melissa Pesce-Rollins, I. A. Grenier, Dario Gasparrini, Warit Mitthumsiri, E. Cavazzuti, David H. Green, Gloria Spandre, P. Spinelli, L. Di Venere, M. Lemoine-Goumard, Francesco Giordano, D. Tak, Carmelo Sgrò, Riccardo Rando, D. Simone, E. Nuss, David Paneque, M. Kuss, T. Ohsugi, Eleonora Troja, M. Orienti, S. Maldera, F. Costanza, Eleonora Torresi, Elisabetta Bissaldi, Gudlaugur Johannesson, Lucas Guillemot, Guido Barbiellini, Paolo Giommi, Massimo Persic, T. Glanzman, Alberto Manfreda, Denis Bastieri, Claudia Cecchi, S. Kensei, Matteo Negro, A. Morselli, P. M. Saz Parkinson, Department of Physics and Astronomy [Clemson], Clemson University, Santa Cruz Institute for Particle Physics (SCIPP), University of California [Santa Cruz] (UCSC), University of California-University of California, University of Pisa - Università di Pisa, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (INFN, Sezione di Trieste), Istituto Nazionale di Fisica Nucleare (INFN), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Istituto Nazionale di Fisica Nucleare [Pisa] (INFN), Stanford University, Istituto Nazionale di Fisica Nucleare, Sezione di Torino (INFN, Sezione di Torino), Laboratoire Univers et Particules de Montpellier (LUPM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Max-Planck-Institut für Physik (Werner-Heisenberg-Institut) (MPI-P), Istituto Nazionale di Fisica Nucleare, sezione di Bari (INFN, sezione di Bari), Agenzia Spaziale Italiana (ASI) Science Data Center, George Mason University [Fairfax], Universita degli Studi di Padova, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Istituto Nazionale di Astrofisica (INAF), Kavli Institute for Particle Astrophysics and Cosmology (KIPAC), Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Humboldt-Universität zu Berlin, Erlangen Centre for Astroparticle Physics (ECAP), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Unité Scientifique de la Station de Nançay (USN), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), Science Institute, University of Iceland, University of Iceland [Reykjavik], Hiroshima City University, Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (INFN, Sezione di Perugia), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), NASA Goddard Space Flight Center (GSFC), Mahidol University [Bangkok], Hiroshima University, Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata (INFN, Sezione di Roma Tor Vergata), Istituto di Radioastronomia INAF, INAF - Osservatorio Astronomico di Trieste (OAT), PPM Group [University of Johannesburg], Department of Geology [University of Johannesburg], University of Johannesburg (UJ)-University of Johannesburg (UJ), NYCB Real-Time Computing Inc., Lattingtown, NYCB Real-Time Computing Inc. [Lattingtown], IEEC-CSIC, Universitat Autònoma de Barcelona (UAB), Istituto di Astrofisica Spaziale e Fisica cosmica - Bologna (IASF-Bo), Fermi-LAT Collaboration, Ajello, M., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Bissaldi, E., Blandford, R. D., Bloom, E. D., Bonino, R., Bregeon, J., Britto, R. J., Bruel, P., Buehler, R., Buson, S., Cameron, R. A., Caputo, R., Caragiulo, M., Caraveo, P. A., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C. C., Chiaro, G., Ciprini, S., Cohen, J. M., Costantin, D., Costanza, F., Cuoco, A., Cutini, S., D'Ammando, F., De Palma, F., Desiante, R., Digel, S. W., Di Lalla, N., Di Mauro, M., Di Venere, L., Domnguez, A., Drell, P. S., Dumora, D., Favuzzi, C., Fegan, S. J., Ferrara, E. C., Fortin, P., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Green, D., Grenier, I. A., Grondin, M. -H., Grove, J. E., Guillemot, L., Guiriec, S., Harding, A. K., Hays, E., Hewitt, J. W., Horan, D., Jóhannesson, G., Kensei, S., Kuss, M., La Mura, G., Larsson, S., Latronico, L., Lemoine-Goumard, M., Li, J., Longo, F., Loparco, F., Lott, B., Lubrano, P., Magill, J. D., Maldera, S., Manfreda, A., Mazziotta, M. N., Mcenery, J. E., Meyer, M., Michelson, P. F., Mirabal, N., Mitthumsiri, W., Mizuno, T., Moiseev, A. A., Monzani, M. E., Morselli, A., Moskalenko, I. V., Negro, M., Nuss, E., Ohsugi, T., Omodei, N., Orienti, M., Orlando, E., Palatiello, M., Paliya, V. S., Paneque, D., Perkins, J. S., Persic, M., Pesce-Rollins, M., Piron, F., Porter, T. A., Principe, G., Raino, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Reposeur, T., Saz Parkinson, P. M., Sgro, C., Simone, D., Siskind, E. J., Spada, F., Spandre, G., Spinelli, P., Stawarz, L., Suson, D. J., Takahashi, M., Tak, D., Thayer, J. G., Thayer, J. B., Thompson, D. J., Torres, D. F., Torresi, E., Troja, E., Vianello, G., Wood, K., Wood, M., National Institute for Nuclear Physics (INFN), Stanford University [Stanford], Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Humboldt Universität zu Berlin, PSL Research University (PSL)-PSL Research University (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Université d'Orléans (UO)-Observatoire des Sciences de l'Univers en région Centre (OSUC), PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), Universitat Autònoma de Barcelona [Barcelona] (UAB), ITA, University of California [Santa Cruz] (UC Santa Cruz), University of California (UC)-University of California (UC), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Padova = University of Padua (Unipd), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Humboldt University Of Berlin, Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), and University of Johannesburg [South Africa] (UJ)-University of Johannesburg [South Africa] (UJ)
Subjects: catalog, Astrophysics::High Energy Astrophysical Phenomena, catalogs, gamma rays: general, FOS: Physical sciences, Energy flux, Flux, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 7. Clean energy, 01 natural sciences, Astronomy and Astrophysics, Space and Planetary Science, law.invention, Telescope, law, 0103 physical sciences, catalogs – gamma rays: general, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, 010308 nuclear & particles physics, Astronomy, Galactic plane, Astronomy and Astrophysic, Redshift, Galaxy, Crab Nebula, [SDU]Sciences of the Universe [physics], ddc:520, Astrophysics - High Energy Astrophysical Phenomena, general [gamma rays], Fermi Gamma-ray Space Telescope
Abstract: We present a catalog of sources detected above 10 GeV by the Fermi Large Area Telescope (LAT) in the first 7 years of data using the Pass 8 event-level analysis. This is the Third Catalog of Hard Fermi-LAT Sources (3FHL), containing 1556 objects characterized in the 10 GeV - 2 TeV energy range. The sensitivity and angular resolution are improved by factors of 3 and 2 relative to the previous LAT catalog at the same energies (1FHL). The vast majority of detected sources (79%) are associated with extragalactic counterparts at other wavelengths, including 16 sources located at very high redshift ($z>2$). Eight percent of the sources have Galactic counterparts and 13% are unassociated (or associated with a source of unknown nature). The high-latitude sky and the Galactic plane are observed with a flux sensitivity of 4.4 to 9.5$\times 10^{-11}$ ph cm$^{-2}$ s$^{-1}$, respectively (this is approximately 0.5% and 1% of the Crab Nebula flux above 10 GeV). The catalog includes 214 new $\gamma$-ray sources. The substantial increase in the number of photons (more than 4 times relative to 1FHL and 10 times to 2FHL) also allows us to measure significant spectral curvature for 32 sources and find flux variability for 163 of them. Furthermore, we estimate that for the same flux limit of $10^{-12}$ erg cm$^{-2}$ s$^{-1}$, the energy range above 10 GeV has twice as many sources as above 50 GeV, highlighting the importance, for future Cherenkov telescopes, of lowering the energy threshold as much as possible., Comment: Accepted by ApJS. Contact authors: Alberto Dominguez, Marco Ajello, Benoit Lott, Sara Cutini, Pascal Fortin. The full FITS catalog will be made available at the FSSC: https://fermi.gsfc.nasa.gov/ssc/
Published: 2017
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12. Progress on collisionally pumped optical-field-ionization soft x-ray lasers

Author: Tomas Mocek, Brigitte Cros, Sophie Kazamias, A.J. Gonzalves, C M McKenna, Simon M. Hooker, David Ros, Stéphane Sebban, S. Le Pape, Bedřich Rus, Annie Klisnick, Gerard Jamelot, Gilles Maynard, Pierre Agostini, P. Balcou, I. Bettaibi, Pierre Breger, David J. Spence, J.-F. Wyart, L. Upcraft, Constance Valentin, A. Butler, Ph. Zeitoun, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Department of Physics [Oxford], University of Oxford, Service des Photons, Atomes et Molécules (SPAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Department of X Ray Lasers, institute of physics PALS center, Laboratoire Aimé Cotton (LAC), École normale supérieure - Cachan (ENS Cachan)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), University of Oxford [Oxford], and Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan)
Subjects: Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Active laser medium, Physics::Instrumentation and Detectors, business.industry, Physics::Optics, Laser pumping, Laser, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, 010309 optics, X-ray laser, Optics, law, 0103 physical sciences, Diode-pumped solid-state laser, Semiconductor optical gain, Physics::Atomic Physics, Laser power scaling, Electrical and Electronic Engineering, 010306 general physics, business, Tunable laser
Abstract: International audience; We present the status of optical field ionization soft X-ray lasers. The amplifying medium is generated by focusing a high-energy circularly polarized 30-fs 10-Hz Ti: sapphire laser system in a gaseous medium. Using xenon or krypton, strong laser emission at 41.8 and 32.8 nm, respectively, has been observed. After presenting the basis of the physics, we present recent characterization of the sources as well as dramatic improvement of their performances using the waveguiding technique.
Published: 2016
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13. Development of Al-based multilayer optics for EUV

Author: Marie-Françoise Ravet-Krill, Marc Roulliay, Evgueni Meltchakov, Françoise Varniere, Françoise Bridou, Y. Menesguen, S. de Rossi, Franck Delmotte, A. Jérome, Christophe Hecquet, Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), and ANR: ATTOMIX,ATTOMIX
Subjects: 42.70.-a - 61.05.Cm - 68.35.Ct - 78.67.Pt - 81.07.-b, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Materials science, business.industry, Superlattice, Extreme ultraviolet lithography, Synchrotron radiation, 02 engineering and technology, General Chemistry, Surface finish, 021001 nanoscience & nanotechnology, 01 natural sciences, 7. Clean energy, 010309 optics, chemistry.chemical_compound, Wavelength, Optics, chemistry, Stack (abstract data type), 0103 physical sciences, Silicon carbide, High harmonic generation, General Materials Science, 0210 nano-technology, business
Abstract: International audience; We report on the development of multilayer optics for the extreme ultra-violet (EUV) range. The optical performance of Al-based multilayer mirrors is discussed with regard to promising reflectivity and selectivity characteristics and the problems of the interfacial roughness for this type of multilayers. We demonstrate a possibility to reduce the average roughness by introducing additional metal layer (W or Mo) rather than depositing a buffer layer at each interface. We have prepared and tested Al/SiC, Al/W/SiC and Al/Mo/SiC multilayers of various periods for the spectral range from 15 to 40 nm, which is the range of increasing interest for high-order harmonic generation, synchrotron radiation and astrophysics. The structure of the three-component systems has been optimized in order to obtain the best reflectivity for each wavelength within the spectral range. We have shown that introduction of refractory metal in Al-based periodic stack can improve the optical performance of multilayer reflecting coatings designed for the EUV applications.
Published: 2009
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14. Dynamical and relativistic effects in experimental and theoretical studies of inner-shell photoionization of sodium

Author: S. Canton, Hsiao-Ling Zhou, Eugene T. Kennedy, John D. Bozek, F. J. Wuilleumier, Steven T. Manson, Alan Hibbert, L. Voky, Xiao-Ying Han, Denis Cubaynes, Nora Berrah, S. Diehl, Jean-Marc Bizau, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], Sodium, Nuclear Theory, chemistry.chemical_element, Photoionization, Condensed Matter Physics, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010305 fluids & plasmas, symbols.namesake, Pauli exclusion principle, chemistry, 0103 physical sciences, Physics::Atomic and Molecular Clusters, symbols, Physics::Atomic Physics, Inner shell, Atomic physics, 010306 general physics, Relativistic quantum chemistry, ComputingMilieux_MISCELLANEOUS, R-matrix
Abstract: High-resolution measurements for inner-shell photoionization of Na are presented along with Breit?Pauli R-matrix calculations. The results show excellent agreement, and give insight into the nature and importance of the various relativistic and correlation effects on the inner-shell process.
Published: 2007
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15. Inertial Regime of the Magnetization: Nutation resonance Beyond Precession Resonance

Author: M. Hayoun, M. Meyer, Enrick Olive, Jean-Eric Wegrowe, Laboratoire des Solides Irradiés (LSI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), GREMAN (matériaux, microélectronique, acoustique et nanotechnologies) (GREMAN - UMR 7347), Université de Tours (UT)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X), Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS), olive, enrick, and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Tours-Centre National de la Recherche Scientifique (CNRS)
Subjects: Inertial frame of reference, [PHYS.PHYS.PHYS-COMP-PH] Physics [physics]/Physics [physics]/Computational Physics [physics.comp-ph], 02 engineering and technology, [PHYS.COND.CM-S] Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], 01 natural sciences, Physics::Geophysics, [PHYS.PHYS.PHYS-COMP-PH]Physics [physics]/Physics [physics]/Computational Physics [physics.comp-ph], Magnetization, Nuclear magnetic resonance, 0103 physical sciences, [PHYS.COND.CM-DS-NN]Physics [physics]/Condensed Matter [cond-mat]/Disordered Systems and Neural Networks [cond-mat.dis-nn], 010306 general physics, ComputingMilieux_MISCELLANEOUS, Larmor precession, Physics, Magnetization dynamics, Condensed matter physics, Nutation, Resonance, 021001 nanoscience & nanotechnology, Magnetic susceptibility, [PHYS.COND.CM-DS-NN] Physics [physics]/Condensed Matter [cond-mat]/Disordered Systems and Neural Networks [cond-mat.dis-nn], [PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], [NLIN.NLIN-CD] Nonlinear Sciences [physics]/Chaotic Dynamics [nlin.CD], Physics::Space Physics, [NLIN.NLIN-CD]Nonlinear Sciences [physics]/Chaotic Dynamics [nlin.CD], Precession, 0210 nano-technology
Abstract: An inertial regime of the magnetization dynamics has been predicted. We study numerically the corresponding equation in the frequency domain. It is shown that inertial terms generate a second resonance peak of the magnetic susceptibility, which corresponds to the nutation frequency. The interplay between precession and nutation is investigated.
Published: 2015

16. Longitudinal coherence and spectral profile of a nickel-like silver transient soft X-ray laser

Author: Annie Klisnick, Gerard Jamelot, Denis Joyeux, David Ros, Djamel Benredjem, Sophie Kazamias, C. Möller, D. Phalippou, Kevin Cassou, Olivier Guilbaud, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)
Subjects: Physics, Wavefront, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Coherence time, [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], business.industry, Optical physics, Laser, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, 010309 optics, Interferometry, Laser linewidth, Optics, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], law, 0103 physical sciences, Spectral width, Coherence (signal processing), [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, business, ComputingMilieux_MISCELLANEOUS
Abstract: The spectral width of a Ni-like silver transient soft X-ray laser (4d-4p λ= 13.9 nm) was experimentally inferred from the measurement of its temporal coherence, performed with a novel wavefront division interferometer. The measured coherence time of 3 ps corresponds to a spectral linewidth of 0.7 mA which is narrow. We compare this experimental result to numerical simulations of the amplified line profile, performed along two different approaches. Both calculations predict a spectral linewidth that is about 3 times larger than the experimental value. We discuss several effects that might explain this discrepancy. We show that, due to the short duration of the X-ray laser pulse, the assumption of a stationary electromagnetic field used in both the experimental analysis and in the calculations need to be reconsidered.
Published: 2006
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17. Origin of microstructures in picosecond X-ray laser beams

Author: Denis Joyeux, David Ros, Kevin Cassou, Olivier Guilbaud, Annie Klisnick, Sophie Kazamias, Gerard Jamelot, D. Phalippou, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), and Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Coherence time, [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], business.industry, General Physics and Astronomy, Pulse duration, Laser, 01 natural sciences, law.invention, 010309 optics, X-ray laser, Optics, [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], law, Picosecond, 0103 physical sciences, 010306 general physics, business, Collisional excitation, ComputingMilieux_MISCELLANEOUS, Beam (structure), Coherence (physics)
Abstract: Beam sections of transient collisional excitation (TCE) soft X-ray lasers exhibit highly contrasted intensity modulations forming complex patterns. We present model calculations that reproduce these experimental observations both qualitatively and quantitatively. The low spatial coherence, high longitudinal coherence and short pulse duration of the source are shown to control the visibility of the beam structures. Comparison with other types of laser-based soft X-ray lasers is discussed. We derive simple relationships that relate the spatial and temporal characteristics of the emitting source to the main features of the beam small-scale structures.
Published: 2006
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18. Trains of attosecond electron wave packets

Author: Mette B. Gaarde, Ph. Balcou, Johan Mauritsson, E. Gustafsson, Katalin Varjú, Rodrigo Lopez-Martens, Anne L'Huillier, Constance Valentin, Kenneth J. Schafer, Thomas Remetter, Sophie Kazamias, Per Johnsson, Department of Physics, Lund Institute of Technology, Lund University [Lund]-Lund University [Lund], Department of Physics and Astronomy [Baton Rouge], Louisiana State University (LSU), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Wave packet, Attosecond, Above threshold ionization, Photoionization, Electron, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010309 optics, Ionization, 0103 physical sciences, Physics::Atomic and Molecular Clusters, High harmonic generation, Astrophysics::Earth and Planetary Astrophysics, Physics::Atomic Physics, Atomic physics, 010306 general physics, Ultrashort pulse
Abstract: International audience; We study temporally localized electron wave packets, generated using a train of extreme ultraviolet (XUV) attosecond pulses to ionize the target atoms. Both the electron wave packets and the attosecond pulse train (APT) are characterized using the same technique, based on interference of two-photon transitions in the continuum. We study, in particular, the energy transfer from a moderately strong infrared (IR) field to the electron wave packets as a function of time delay between the XUV and the IR fields. The use of an APT to generate the electron wave packets enables the generation at times not accessible through tunneling ionization. We find that a significant amount of energy is transferred from the IR field to the electron wave packets, when they are generated at a zero-crossing of the IR laser field. This energy transfer results in a dramatically enhanced above-threshold ionization even at IR intensities that alone are not strong enough to induce any significant ionization.
Published: 2006
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19. A high-intensity highly coherent soft X-ray femtosecond laser seeded by a high harmonic beam

Author: D. Aubert, Gabriel Faivre, Philippe Balcou, Stéphane Sebban, Marta Fajardo, Tomas Mocek, G. de Lacheze-Murel, Sophie Kazamias, Frédéric Burgy, Hamed Merdji, A. Hallou, T. Lefrou, S. Le Pape, Denis Douillet, Anne-Sophie Morlens, Philippe Zeitoun, Jean-Philippe Rousseau, Constance Valentin, Pascal Mercère, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centro de Física dos Plasmas, Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire pour l'utilisation des lasers intenses (LULI), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Service des Photons, Atomes et Molécules (SPAM), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], Soft x ray, Multidisciplinary, Materials science, business.industry, Amplifier, Nonlinear optics, Plasma, Laser, 01 natural sciences, Optical quality, law.invention, 010309 optics, Optics, law, 0103 physical sciences, Femtosecond, Optoelectronics, 010306 general physics, business, Coherence (physics)
Abstract: International audience; Synchrotrons have for decades provided invaluable sources of soft X-rays, the application of which has led to significant progress in many areas of science and technology. But future applications of soft X-rays—in structural biology, for example—anticipate the need for pulses with much shorter duration (femtoseconds) and much higher energy (millijoules) than those delivered by synchrotrons. Soft X-ray free-electron lasers1 should fulfil these requirements but will be limited in number; the pressure on beamtime is therefore likely to be considerable. Laser-driven soft X-ray sources offer a comparatively inexpensive and widely available alternative, but have encountered practical bottlenecks in the quest for high intensities. Here we establish and characterize a soft X-ray laser chain that shows how these bottlenecks can in principle be overcome. By combining the high optical quality available from high-harmonic laser sources (as a seed beam) with a highly energetic soft X-ray laser plasma amplifier, we produce a tabletop soft X-ray femtosecond laser operating at 10 Hz and exhibiting full saturation, high energy, high coherence and full polarization. This technique should be readily applicable on all existing laser-driven soft X-ray facilities.
Published: 2004
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20. Optimization of the focused flux of high harmonics

Author: Th. Lefrou, Ph. Zeitoun, Ph. Balcou, F. Augé, P. Mercere, G. Grillon, Constance Valentin, G. Mullot, Sophie Kazamias, Denis Douillet, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Energy conversion efficiency, Optical physics, Nonlinear optics, PACS 32.80.Rm, 42.65.Ky, Radiation, Laser, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, 010309 optics, Optics, law, Harmonics, 0103 physical sciences, Harmonic, 010306 general physics, business, Beam (structure)
Abstract: International audience; Following the theoretical predictions, the observation of two-photon processes by interaction of vacuum ultraviolet (VUV) radiation with inner-shell levels of atoms requires focused intensities in the 10^13-10^14 W/cm^2 range. Our aim is to reach this regime in order to study non-linear optics at these wavelengths. We first optimized the high harmonic conversion efficiency in argon by studying the best experimental conditions for phase-matching, concentrating on focus geometry related to laser energy, cell length and position relative to the focus. We then studied the resulting harmonic beam focusability by a toroidal mirror ( f=10 cm) and made an image of the harmonic focus. We conclude with an evaluation of the focused intensity that we are able to reach experimentally.
Published: 2003
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21. Technical Design Report EuroGammaS proposal for the ELI-NP Gamma beam System

Author: Adriani, O., Albergo, S., Alesini, D., Anania, M., Angal-Kalinin, D., Antici, P., Bacci, A., Bedogni, R., Bellaveglia, M., Biscari, C., Bliss, N., Boni, R., Manuela Boscolo, Broggi, F., Cardarelli, P., Cassou, K., Castellano, M., Catani, L., Chaikovska, I., Chiadroni, E., Chiche, R., Cianchi, A., Clarke, J., Clozza, A., Coppola, M., Courjaud, A., Curatolo, C., Dadoun, O., Delerue, N., Martinis, C., Di Domenico, G., Di Pasquale, E., Di Pirro, G., Drago, A., Druon, F., Dupraz, K., Egal, F., Esposito, A., Falcoz, F., Fell, B., Ferrario, M., Ficcadenti, L., Fichot, P., Gallo, A., Gambaccini, M., Gatti, G., Georges, P., Ghigo, A., Goulden, A., Graziani, G., Guibout, D., Guilbaud, O., Hanna, M., Herbert, J., Hovsepian, T., Iarocci, E., Iorio, P., Jamison, S., Kazamias, S., Labaye, F., Lancia, L., Marcellini, F., Martens, A., Maroli, C., Martlew, B., Marziani, M., Mazzitelli, G., Mcintosh, P., Migliorati, M., Mostacci, A., Mueller, A., Nardone, V., Pace, E., Palmer, D. T., Palumbo, L., Pelorosso, A., Perin, F. X., Passaleva, G., Pellegrino, L., Petrillo, V., Pittman, M., Riboulet, G., Ricci, R., Ronsivalle, C., Ros, D., Rossi, A., Serafini, L., Serio, M., Sgamma, F., Smith, R., Smith, S., Soskov, V., Spataro, B., Statera, M., Stecchi, A., Stella, A., Stocchi, A., Tocci, S., Tomassini, P., Tomassini, S., Tricomi, A., Vaccarezza, C., Variola, A., Veltri, M., Vescovi, S., Villa, F., Wang, F., Yildiz, E., Zomer, F., Laboratori Nazionali di Frascati (LNF), Istituto Nazionale di Fisica Nucleare (INFN), Dept. Accelerateurs, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), STMicroelectronics, Time and Frequency Laboratory (LTF), Université de Neuchâtel (UNINE), Laboratoire Charles Fabry / Lasers, Laboratoire Charles Fabry (LCF), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Istituto Nazionale di Fisica Nucleare, Sezione di Milano (INFN), LASERIX, Université Paris-Sud - Paris 11 (UP11), EuroGammaS, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome] (UNIROMA)
Subjects: Astrophysics::High Energy Astrophysical Phenomena, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Physics::Accelerator Physics
Abstract: The machine described in this document is an advanced Source of up to 20 MeV Gamma Rays based on Compton back-scattering, i.e. collision of an intense high power laser beam and a high brightness electron beam with maximum kinetic energy of about 720 MeV. Fully equipped with collimation and characterization systems, in order to generate, form and fully measure the physical characteristics of the produced Gamma Ray beam. The quality, i.e. phase space density, of the two colliding beams will be such that the emitted Gamma ray beam is characterized by energy tunability, spectral density, bandwidth, polarization, divergence and brilliance compatible with the requested performances of the ELI-NP user facility, to be built in Romania as the Nuclear Physics oriented Pillar of the European Extreme Light Infrastructure. This document illustrates the Technical Design finally produced by the EuroGammaS Collaboration, after a thorough investigation of the machine expected performances within the constraints imposed by the ELI-NP tender for the Gamma Beam System (ELI-NP-GBS), in terms of available budget, deadlines for machine completion and performance achievement, compatibility with lay-out and characteristics of the planned civil engineering.
Published: 2014

22. Photoabsorption and photoionization of the 1s2 ground state of He-like ions near 2s2p 1P1 autoionizing resonance

Author: J Dubau, O Zabaydullin, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)
Subjects: Physics, [PHYS]Physics [physics], Resonance, Photoionization, Condensed Matter Physics, 01 natural sciences, Atomic and Molecular Physics, and Optics, Ion, 0103 physical sciences, Physics::Atomic and Molecular Clusters, Radiative transfer, Physics::Atomic Physics, Atomic physics, 010306 general physics, Ground state, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, Atomic data
Abstract: For He-like ions, photoabsorption and photoionization cross-sections of 1s 2 can differ in the resonance region due to possible resonance radiative decays. This difference increases along isoelectronic sequence. As an example, the 2s2p autoionizing state is considered for different atomic elements (Z = 16, 20, 26). For these elements, we use atomic data computed, without radiative damping, by the R-matrix Breit–Pauli code for 1s 2 and 1s2s photoionization processes, which are available on atomic data websites. Applying Davies and Seaton’s (1969 J. Phys. B: At. Mol. Phys. 2 757) radiative damping theory, we insert the damping effect. Comparisons are made with similar data computed by another code, which uses Robicheaux et al’s (1995 Phys. Rev. A 52 1319) damping theory, also available on an atomic code website. We also present a very simple approximation of Davies and Seaton’s theory, and test it by comparisons of data computed with and without the approximation.
Published: 2012
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23. Systèmes multicouches réalisés par pulvérisation ionique à base d'Aluminum dans le domaine Extreme UV pour l'imagerie solaire

Author: Ahmed Ziani, Arnaud Jérôme, Evgueni Meltchakov, Françoise Bridou, Franck Delmotte, Marc Roulliay, Centre National d'Études Spatiales [Toulouse] (CNES), Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMethodologies_GENERAL, ComputingMilieux_MISCELLANEOUS
Abstract: poster; International audience
Published: 2011

24. Systèmes multicouches à base d'aluminium réalisés par pulvérisation ionique dans le domaine Extrême Ultraviolet pour l'imagerie solaire

Author: Evgueni Meltchakov, Marc Roulliay, Arnaud Jérôme, Françoise Bridou, Ahmed Ziani, Karine Gasc, Franck Delmotte, Centre National d'Études Spatiales [Toulouse] (CNES), Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], 13. Climate action, ComputingMethodologies_GENERAL, 7. Clean energy, ComputingMilieux_MISCELLANEOUS
Abstract: Ce travail porte sur la conception, la realisation et la caracterisation de nouveaux miroirs interferentiels extreme ultra-violet (EUV) pour des applications en imagerie spatiale. Ce sujet se situe dans la continuite des etudes menees au laboratoire Charles Fabry de L’institut d’Optique depuis de nombreuses annees. Les resultats vises seront particulierement importants pour la preparation de la mission Solar Orbiter.
Published: 2010
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25. Observation of spectral gain narrowing in a high-order harmonic seeded soft-x-ray amplifier

Author: J. Ph. Goddet, Olivier Guilbaud, Gilles Maynard, Ph. Zeitoun, Tomas Mocek, Jaroslav Nejdl, Julien Gautier, Antoine Rousse, Annie Klisnick, Frédéric Burgy, Guillaume Lambert, Fabien Tissandier, Stéphane Sebban, M. Ribière, A. Barszczak Sardinha, Constance Valentin, T. Lefrou, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Department of X-ray Lasers, Czech Academy of Sciences [Prague] (CAS), and Laboratoire de physique des gaz et des plasmas (LPGP)
Subjects: Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Amplifier, Laser, 01 natural sciences, Electromagnetic radiation, Atomic and Molecular Physics, and Optics, law.invention, 010309 optics, Laser linewidth, Interferometry, Optics, law, 0103 physical sciences, Astronomical interferometer, Radiative transfer, Coherence (signal processing), 010306 general physics, business, PACS 42.55.Vc, 42.65.Ky
Abstract: International audience; We report an observation of spectral gain narrowing of a high-order harmonic amplified by a soft-x-ray optical-field-ionized plasma. The temporal coherence and spectral linewidth of both the seeded and unseeded soft-x-ray lasers were experimentally measured using a varying-path-difference interferometer. The results showed that the high-order harmonic is subject to a strong spectral narrowing during its propagation in the plasma amplifier without rebroadening at saturation. This is in good agreement with a radiative transfer calculation including gain narrowing and saturation rebroadening.
Published: 2010
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26. Fourier-limited seeded soft x-ray laser pulse

Author: Tomas Mocek, Sophie Kazamias, J. Nedjl, Brigitte Cros, Jean-Philippe Goddet, Denis Joyeux, Annette Calisti, David Ros, Djamel Benredjem, Ph. Zeitoun, M. Ribière, S. de Rossi, Fabien Tissandier, A. Boudaa, Olivier Guilbaud, Kevin Cassou, Annie Klisnick, J. Habib, Gilles Maynard, Stéphane Sebban, Julien Gautier, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Aimé Cotton (LAC), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-École normale supérieure - Cachan (ENS Cachan), Institute of Physics (PALS), Czech Academy of Sciences [Prague] (CAS), Laboratoire de physique des gaz et des plasmas (LPGP), Physique des interactions ioniques et moléculaires (PIIM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), and École normale supérieure - Cachan (ENS Cachan)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Krypton, chemistry.chemical_element, Pulse duration, Laser, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010305 fluids & plasmas, law.invention, Laser linewidth, Full width at half maximum, Optics, chemistry, law, Ionization, 0103 physical sciences, Radiative transfer, 010306 general physics, business, Bandwidth-limited pulse
Abstract: International audience; We present what we believe to be the first measurement of the spectral properties of a soft x-ray laser seeded by a high-order harmonic beam. Using an interferometric method, the spectral profile of a seeded Ni-like krypton soft x-ray laser (32.8 nm) generated by optical field ionization has been experimentally determined, and the shortest possible pulse duration has been deduced. The source exhibits a Voigt spectral profile with an FWHM of 3.1±0.3 mÅ, leading to a Fourier-transform pulse duration of 4.7 ps. This value is comparable with the upper limit of the soft x-ray pulse duration determined by experimentally investigating the gain dynamics, from which we conclude that the source has reached the Fourier limit. The measured bandwidth is in good agreement with the predictions of a radiative transfer code, including gain line narrowing and saturation rebroadening.
Published: 2010
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27. Multilayer X-ray gratings with high efficiency in the 1-5 keV energy domain

Author: François Polack, Bruno Lagarde, Mourad Idir, Franck Delmotte, Fadi Choueikani, Françoise Bridou, Marc Roulliay, Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2010

28. Opacity and radiative power losses calculations

Author: C. Mossé, Djamel Benredjem, Annette Calisti, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Physique des interactions ioniques et moléculaires (PIIM), and Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, [PHYS]Physics [physics], Nuclear and High Energy Physics, Radiation, Opacity, 010308 nuclear & particles physics, Plasma, Electron, 01 natural sciences, Ion, symbols.namesake, Stark effect, Physics::Plasma Physics, 0103 physical sciences, symbols, Radiative transfer, Physics::Atomic Physics, Atomic physics, 010306 general physics, Doppler effect, Line (formation)
Abstract: International audience; In this contribution we present results on opacity and radiative power losses in laser-produced plasmas. We focus our attention on the inner shell transition array 1s-2p in an aluminum plasma. At high densities, electron, Doppler and ion Stark broadening play a role in line merging. This is why the PPP line shape code developed at Universite de Provence was adapted to calculate opacity and radiative power losses in Al and Ge ions. Atomic physics data required in PPP calculations is provided by an MCDF code. Comparison with experiments is discussed. (c) 2009 Elsevier B.V. All rights reserved.
Published: 2009
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29. Laser creation of aluminium plasma from a solid target: A model

Author: Morel, V, Bultel, A, Benredjem, D., Chéron, B G, Complexe de recherche interprofessionnel en aérothermochimie (CORIA), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), and Morel, Vincent
Subjects: [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], [PHYS.PHYS.PHYS-PLASM-PH] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph]
Abstract: International audience; Several phenomena are evolving at the same time in laser-induced plasmas. Modelling the creation phase of this kind of plasma implies to understand these phenomena and their interactions. A 1D model was elaborated with the purpose of providing a complete description of the ablation of an aluminium alloy target. Phenomena as solid heating, vaporisation step vapour excitation and ionisation processes, among others, were taken into account. The plasma was assumed to have stored energy in more than one hundred level of Al, Al + , Al ++ , Al +++ and free electrons interacting through five processes. In this paper we propose to describe influences of the multiphoton ionisation and target surface temperature from ambient to critical temperature.
Published: 2009

30. Stabilité thermique des performances spectrales de miroirs EUV

Author: Franck Delmotte, Françoise Varniere, Christophe Hecquet, Marie-Françoise Ravet-Krill, Evgueni Meltchakov, Marc Roulliay, Andre Rinchet, Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), and SAGEM Défense Sécurité [Massy]
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMethodologies_GENERAL, ComputingMilieux_MISCELLANEOUS
Abstract: Resume. Le developpement de miroirs EUV resistant a des temperatures elevees represente un enjeu important pour la lithographie EUV. Nous avons optimise et depose plusieurs empilements multicouches Mo/SiC/Si/SiC en faisant varier les epaisseurs respectives de SiC aux deux interfaces. Ces differents types d’empilements ont ensuite subi une serie de recuits thermiques pour evaluer l’influence des deux parametres temps et temperature de recuit, sur les performances spectrales. Des structures stables apres un recuit de 200 h a 400 ◦C ont ete optimisees et caracterisees.
Published: 2009
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31. Photoionization cross sections of iron isonuclear sequence ions: Fe2+ to Fe6+

Author: El Hassan, N., Bizau, J.M., Blancard, C., Cosse, P., Cubaynes, D., Faussurier, G., Folkmann, Finn, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), DAM Île-de-France (DAM/DIF), Direction des Applications Militaires (DAM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Danish AsteroSeismology Centre (DASC)
Subjects: [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract: International audience; We have measured the absolute photoionization cross sections of Fe2+ to Fe6+ ions in the photon energy range covering the first ionization threshold up to 160 eV. Particular interest is emphasized on the region of the 3p-->3d excitations. The experimental data are compared to the results of calculations we have performed using a spectral opacity code, as well as to available R -matrix and one-electron calculations. It is shown that often the theoretical results tend to overestimate the intensity of the 3p-->3d photoexcitations. An anomalously low value of the integrated oscillator strength is measured for Fe2+ ion.
Published: 2009
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32. LASERIX : premier bilan du fonctionnement de l'installation

Author: Sophie Kazamias, Denis Joyeux, David Ros, F. Plé, J. Habib, F. de Dortan, Erika Porcel, Philippe Zeitoun, C. Le Sech, Kevin Cassou, Bernhard Zielbauer, M. Marsi, Moana Pittman, Marta Fajardo, Olivier Guilbaud, Annie Klisnick, M. Farinet, Sandrine Lacombe, A. Touati, M.-A. du Penhoat, LASERIX, Université Paris-Sud - Paris 11 (UP11), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des collisions atomiques et moléculaires (LCAM), Institut de minéralogie et de physique des milieux condensés (IMPMC), Université Pierre et Marie Curie - Paris 6 (UPMC)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Centro de Física dos Plasmas, Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Fundamental study, Engineering, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Context (language use), Plasma, Laser, law.invention, Optics, law, Extreme ultraviolet, High harmonic generation, High order, business, Beam (structure), ComputingMilieux_MISCELLANEOUS
Abstract: Resume. The LASERIX facility provides coherent and short soft x-ray beams for scientific applications. The beams are generated through high intensity laser interaction with matter using two different schemes, plasma based soft x-ray lasers, and high order laser harmonic generation. We describe in this communication the present status of the facility. The experimental setup composed of a terawatt titanium-sapphire laser and of different IR/XUV conversion devices is briefly described. The LASERIX beamtime has been recently opened to external users. We present two typical experiments performed in that context with the facility. The first one is dedicated to the fundamental study of the plasma based soft x-ray laser, whereas the second uses the existing beam to study irradiation induced damages in DNA samples. The future evolution of the facility, including enhancement of the laser energy is finally presented.
Published: 2008
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33. Caractérisation spatio-temporelle d'un laser XUV injecté

Author: Ph. Zeitoun, Denis Joyeux, David Ros, S. de Rossi, Tomas Mocek, Annie Klisnick, Stephane Sebban, Marie-Françoise Ravet, Sophie Kazamias, Krzysztof Jakubczak, J. P. Goddet, G. Lambert, F. Delmotte, Djamel Benredjem, G. Jamelot, Annette Calisti, T. Marchenko, J. Gautier, Kevin Cassou, J. Habib, A. Boudaa, Constance Valentin, Brigitte Cros, Gilles Maynard, Fabien Tissandier, Michaela Kozlova, O. Guilbaud, J. C. Lagron, D. Phalippou, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des gaz et des plasmas (LPGP), Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), Physique des interactions ioniques et moléculaires (PIIM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Institute of Physics (PALS), Czech Academy of Sciences [Prague] (CAS), and Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMilieux_MISCELLANEOUS
Abstract: Caracterisation spatio-temporelle d’un laser XUV injecte J.-P. Goddet1, S. Sebban1, O. Guilbaud2, G. Maynard3, B. Cros3, J. Gautier1, Ph. Zeitoun1, C. Valentin1, F. Tissandier1, T. Marchenko1, G. Lambert1, D. Benredjem2, A. Boudaa3, A. Klisnick2, D. Ros2, S. Kazamias2, K. Cassou2,3, J. Habib2, G. Jamelot2, J.-C. Lagron2, D. Joyeux4, S. De Rossi4, D. Phalippou4, F. Delmotte4, M.F. Ravet4, A. Calisti5, T. Mocek6, M. Kozlova6 et K. Jakubczak6
Published: 2008
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34. Cohérence temporelle et largeur spectrale des lasers XUV transitoires pompés en incidence rasante

Author: O. Guilbaud, F. de Dortan, M. Pittman, Annie Klisnick, J. Habib, B. Zielbauer, Denis Joyeux, David Ros, S. Kazamias, Laboratoire d'optique appliquée (LOA), École Nationale Supérieure de Techniques Avancées (ENSTA Paris)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), and Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)
Subjects: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMethodologies_GENERAL, ComputingMilieux_MISCELLANEOUS
Abstract: Des progres remarquables ont ete accomplis ces dernieres annees pour faire des lasers XUV des sources a haute cadence, intenses et totalement coherentes. L’injection d’harmoniques laser d’ordre eleve HOH dans un laser X constitue l’un des progres les plus significatifs obtenus [1]. Plusieurs points restent toutefois a ameliorer pour que le laser X rivalise avec les harmoniques d’ordre eleve ou les lasers X a electrons libres (XFEL). Si en regime injecte, la duree des impulsions laser X atteint maintenant la limite de Fourier [3], elle reste encore dans le domaine picoseconde. Ceci est du a la faible largeur spectrale de l’etage amplificateur laser X employe. Le rayonnement harmonique possede un spectre beaucoup plus large que le laser XUV. En injectant celui-ci dans le plasma laser XUV, son spectre va subir un retrecissement, qui entrainera un etirement temporel de l’impulsion au cours de son amplification. Les lasers XUV generes dans des plasmas de cibles solides presentent potentiellement des largeurs spectrales elevees car la temperature ionique et les taux de collisions peuvent y devenir importants. C’est pourquoi nous avons mene une etude de la largeur spectrale d’un laser XUV a Molybdene nickelloide ( = 18.9 nm), pompe en incidence rasante, et fonctionnant pour le moment en configuration noninjectee (Amplification de l’emission spontanee). Nous esperons qu’une telle etude, menee de maniere exhaustive puisse donner des informations sur la meilleure facon d’obtenir des durees d’impulsions plus courtes en regime injecte. D’autre part, la connaissance du profil spectral de la raie laser XUV est cruciale en regime injecte pour determiner le couplage entre l’harmonique et l’amplificateur. la finesse de la raie laser X ( / < 10−4) rend difficile sa mesure par spectroscopie classique. Nous avons deduit la largeur spectrale de la source de la mesure de sa coherence temporelle. Nous avons a cette fin realise une experience d’interferometrie au cours de laquelle nous avons mesure le contraste de franges d’interference en fonction de la difference de marche entre les faisceaux qui interferent. Jusqu’ici peu d’etudes sur la coherence temporelle des lasers XUV ont ete realisees. Il faut en effet un interferometre XUV d’excellente qualite utilisant des technologies de pointe. Les premieres experiences utilisaient ainsi des interferometres a division d’amplitude [4,5] equipes de lames separatrices multicouches XUV. La faible stabilite des lasers XUV et le faible taux de repetition des installations rendaient de plus difficiles la realisation de series de mesures de bonne qualite et a fortiori la realisation d’etudes de la largeur spectrale en fonction d’un parametre.
Published: 2008
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35. The 'KEER' effect in the double photoionization of H2

Author: Avaldi, L., Bolognesi, P., Colgan, J., Gisselbrecht, M., Huetz, A., Lavollee, M., Pindzola, M.S., Redish, Tj, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2008

36. Coupling of an FT-ICR mass spectrometer with a VUV beamline

Author: Thissen, R., Bizau, J. M., Blancard, C., Coreno, M., Dehon, C., Franceschi, P., Lemaire, Jl, Nicolas, C., Giuliani, A., Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph]
Published: 2008

37. Photoionisation simple et double à deux couleurs d'atomes de gaz rares

Author: Guyetand, O., Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Université Paris Sud - Paris XI, and Alain HUETZ
Subjects: " attoseconde", [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], " femtoseconde", "photoionisation", Physique atomique, "Physique atomique", " lasers", photoionisation, "infrarouge", femtoseconde, attoseconde, lasers, infrarouge
Abstract: The present work deals with simple and double ionization of rare gases by harmonic radiation produced by, and combined with, an intense femtosecond infrared laser. Technical aspects related to the use of harmonic generation and to the detection of ions and electrons in coincidence are exposed. Theoretical background for two colour, few photon, single and double ionization is detailled. Spectra and angular distributions of the photoelectrons measured in helium aredescribed and compared with TDSE theoretical calculations, for various conditions of the harmonic photons. The shape of the angular distributions can be explained within the frame of two distinct analytic approaches : the pertubation theory and the soft-photon approximation. The double ionization measurements have been performed on xenon, a complex atome characterized by many possible routes leading to double ionization. The analysis of energy and angular correlations of the two photoelectrons proves the feasibility of suchs experiments, which combine harmonic and infrared radiations. It shows that two step processes are dominant in the case of xenon. This work appeals for extending few photon, double ionization experiments to lighter rare gases.; Ce travail de thèse s'attache à l'étude des phénomènes de photoionisation simple et double d'atomes de gaz rares par un rayonnement harmonique produit par un laser infrarouge, et, combiné avec celui-ci. les aspects techniques liés à l'utilisation de sources de génération d'harmoniques et à la détection des ions et des électrons utilisant la technique des coïncidences sont exposés. Les aspects théoriques pour le processus de photoionisation simple et double par des photons XUV et infrarouge sont détaillés. Les mesures des spectres et des distributions angulaires des photoélectrons issus de la simple ionisation à deux couleurs d'atomes d'hélium sont présentées et sont confrontées à des calculs théoriques TDSE, dans plusieurs conditions différentes en terme de rayonnement harmonique. La forme des distributions angulaires obtenues peut être interprétée analytiquement dans le cadre de deux approximation distinctes : la théorie des perturbations et l'approximation "soft-photon". Les expériences sur la double ionisation ont nécessité la construction d'un nouveau système de détection des ions et des électrons en coïncidence (CIEL2). Les mesures de double ionisation ont été réalisées sur le xénon, qui est un atome complexe présentant de nombreux chemins de double ionisation. L'analyse des énergies des deux photoélectrons ainsi que de leur angle mutuel prouve la faisabilité d'une telle expérience sur une source harmonique générée par un laser infrarouge femtoseconde. Elle montre que les processus à deux étapes sont majoritaires dans le cas du xénon. Elle ouvre la voie des expériences futures de double photoionisation à deux photon des autres gaz rares plus légers.
Published: 2008

38. Kinetic Energy Release Effects on the Angular Disributions from the Photoionization of H+2

Author: Colgan, J., Huetz, A., Pindzola, M.S., Redish, Tj, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2008

39. Interplay between Electronic and Nuclear Motion in the Photodouble Ionization of H2

Author: Avaldi, L., Bolognesi, P., Colgan, J., Gisselbrecht, M., Huetz, A., Lavollee, M., Pindzola, M.S., Redish, Tj, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2008

40. Characterization of a transient collisional Ni-like molybdenum soft-x-ray laser pumped in grazing incidence

Author: Sophie Kazamias, S. de Rossi, F. Ple, Gerard Jamelot, D. Urescu, Filip Lindau, Claes-Göran Wahlström, Annie Klisnick, Denis Joyeux, David Ros, Kevin Cassou, T. Kühl, Olle Lundh, Bernhard Zielbauer, Anders Persson, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Department of Physics, Lund University [Lund], Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Institut d'Optique Graduate School (IOGS)-Centre National de la Recherche Scientifique (CNRS), and Helmholtz zentrum für Schwerionenforschung GmbH (GSI)
Subjects: Physics, Brightness, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Physics::Optics, Plasma, Laser pumping, Laser, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, 010309 optics, Optics, law, 0103 physical sciences, Monochromatic color, Transient (oscillation), Atomic physics, 010306 general physics, business, Lasing threshold, Beam (structure)
Abstract: International audience; We present experimental results from an extensive investigation of a Ni-like Mo x-ray laser pumped in the transient regime and GRIP configuration (GRazing Incidence Pumping). The pump laser is a 10 Hz, 1 J, Ti:sapphire laser system. The main diagnostic is a monochromatic near-field imaging system with a 1.7 micron spatial resolution that shows the soft-x-ray laser source size and position relative to the target surface. Changes of those characteristics are observed for different GRIP angles, varied between 15° and 21° , while keeping all other parameters constant. Intense lasing is observed routinely at 18.9 nm with up to 3 microjoule output energy and stable operation is demonstrated at 10 Hz. We have investigated the role of several pumping parameters, in particular, the relative energy and delay between the long and short pulse. We show that this multiparameter scan leads to a well-defined optimal regime of operation and better understanding of the GRIP configuration. Finally, as the GRIP scheme requires careful tailoring of the plasma conditions to the specific soft-x-ray laser under investigation, we add a prepulse before the plasma producing long pulse to generate large-scale preplasmas. This increases the brightness of the soft-x-ray beam and leads to an almost Gaussian near-field spatial profile.
Published: 2008

41. First time efficient coupling an FT-ICR Ion Trap to a VUV beamline : new results on photoionization of Xe+ ion

Author: Bizau, J. M., Blancard, C., Coreno, M., Dehon, C., Franceschi, P., Giuliani, A., Lemaire, Jl, Nicolas, C., Thissen, R., Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph]
Published: 2008

42. Towards ultra-short pulse X-ray lasers

Author: Klisnick, A., Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), and Apruzzese, Sylvie
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], [PHYS.PHYS.PHYS-PLASM-PH] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], [PHYS.PHYS.PHYS-ATOM-PH] Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2008

43. Evolution of angulardistributions in two-colour, few-position ionization of helium

Author: Agostini, P., Bottcher, M., Gisselbrecht, M., Guyetand, O., Huetz, A., Maquet, A., Rottke, H., Taieb, R., Carre, B., Breger, P., Gobert, O., Garzella, D., F Hergott, J., Tcherbakoff, O., Hamed Merdji, Bougeard, M., Anzari, Z., Ph Antoine, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), and Apruzzese, Sylvie
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], [PHYS.PHYS.PHYS-ATOM-PH] Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2008

44. Complete momentum analysis of Multiphoton Photo-double ionization of xenon by XUV and infrared photons

Author: Agostini, P., Ph Antoine, Anzari, Z., Bottcher, M., Bougeard, M., Breger, P., Carré, B., Garzella, D., Gisselbrecht, M., Gobert, O., Guyetand, O., F Hergott, J., Huetz, A., Hamed Merdji, Rottke, H., Tcherbakoff, O., Di Mauro, L. F., Apruzzese, Sylvie, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], [PHYS.PHYS.PHYS-ATOM-PH] Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2008

45. Multicouches à base d'Aluminium pour l'EUV

Author: Evgueni Meltchakov, Christophe Hecquet, Marc Roulliay, Arnaud Jérôme, Françoise Bridou, Françoise Varniere, Marie-Françoise Ravet, Franck Delmotte, de Rossi, Sébastien, Laboratoire Charles Fabry de l'Institut d'Optique / Scop, Laboratoire Charles Fabry de l'Institut d'Optique (LCFIO), Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut d'Optique Graduate School (IOGS)-Université Paris-Sud - Paris 11 (UP11), Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], ComputingMethodologies_GENERAL
Abstract: poster
Published: 2008

46. Physical Interpretation of the 'Kinetic Energy Release' Effect in the Double Photoionization of H2

Author: Avaldi, L., Bolognesi, P., Colgan, J., Gisselbrecht, M., Huetz, A., Lavollee, M., Pindzola, M.S., Redish, Tj, Apruzzese, Sylvie, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], [PHYS.PHYS.PHYS-ATOM-PH] Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2008

47. Electron impact broadening of spectral lines in Be-like ions : quantum calculations

Author: M. Cornille, Sylvie Sahal-Bréchot, J Dubau, Nébil Ben Nessib, Haykel Elabidi, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Groupe de Recherche en Physique Atomique et Astrophysique, Université de Carthage, Laboratoire Univers et Théories (LUTH (UMR_8102)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), and Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Coupling, [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], Plasma, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Spectral line, Ion, symbols.namesake, Stark effect, symbols, Physics::Atomic Physics, Atomic physics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Quantum, Electron ionization, ComputingMilieux_MISCELLANEOUS
Abstract: International audience; We present in this paper quantum mechanical calculations for the electron impact Stark linewidths of the 2s3s-2s3p transitions for the four beryllium-like ions from N IV to Ne VII. Calculations are made in the frame of the impact approximation and intermediate coupling, taking into account fine-structure effects. A comparison between our calculations, experimental and other theoretical results, shows a good agreement. This is the first time that such a good agreement is found between quantum and experimental linewidths of highly charged ions.
Published: 2008
Full Text: View/download PDF

48. Characterisation of a transient collisional Ni-like molybdenum soft x-ray laser pumped in grazing incidence

Author: Klisnick, Annie, Kazamias, Sophie, Cassou, Kevin, Ros, David, Ple, Fabien, Jamelot, Gérard, Lundh, O., Lindau, F., Persson, A., Wahlstrom, C.G, Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2008

49. Internuclear separation dependence of the angular distributions from photoionization of H2+

Author: Huetz, A., Redish, Tj, Colgan, J., Pindzola, M.S., Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), and Apruzzese, Sylvie
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], [PHYS.PHYS.PHYS-ATOM-PH] Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2008

50. Experimental and theoretical determination of the photoionisation cross section for Fe2+ to Fe 6+ ions

Author: Bizau, J. M., Blancard, C., Cubaynes, D., Folkmann, F., Lemaire, Jl, Wuilleumier, Fj, El Hassan, N., Faussurier, G., Luna, H., Laboratoire d'interaction du rayonnement X avec la matière (LIXAM), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.PHYS.PHYS-ATOM-PH]Physics [physics]/Physics [physics]/Atomic Physics [physics.atom-ph]
Published: 2007

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