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1. Powder Metallurgy Processing and Characterization of the χ Phase Containing Multicomponent Al-Cr-Fe-Mn-Mo Alloy

Author

Tomasz Stasiak, Mourtada Aly Sow, Matthieu Touzin, Franck Béclin, Catherine Cordier, Unité Matériaux et Transformations - UMR 8207 (UMET), Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), Université de Lille, CNRS, INRAE, ENSCL, and Unité Matériaux et Transformations (UMET) - UMR 8207

Subjects
powder metallurgy, sintering, chi-phase, phase structure, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [CHIM.MATE]Chemical Sciences/Material chemistry, multicomponent material, high entropy alloy, compositionally complex alloy, mechanical alloying
Abstract

High entropy alloys present many promising properties, such as high hardness or thermal stability, and can be candidates for many applications. Powder metallurgy techniques enable the production of bulk alloys with fine microstructures. This study aimed to investigate powder metallurgy preparation, i.e., mechanical alloying and sintering, non-equiatomic high entropy alloy from the Al-Cr-Fe-Mn-Mo system. The structural and microstructural investigations were performed on powders and the bulk sample. The indentation was carried out on the bulk sample. The mechanically alloyed powder consists of two bcc phases, one of which is significantly predominant. The annealed powder and the sample sintered at 950 °C for 1 h consist of a predominantly bcc phase (71 ± 2 vol.%), an intermetallic χ phase (26 ± 2 vol.%), and a small volume fraction of multielement carbides—M6C and M23C6. The presence of carbides results from carbon contamination from the balls and vial during mechanical alloying and the graphite die during sintering. The density of the sintered sample is 6.71 g/cm3 (98.4% relative density). The alloy presents a very high hardness of 948 ± 34 HV1N and Young’s modulus of 245 ± 8 GPa. This study showed the possibility of preparing ultra-hard multicomponent material reinforced by the intermetallic χ phase. The research on this system presented new knowledge on phase formation in multicomponent systems. Moreover, strengthening the solid solution matrix via hard intermetallic phases could be interesting for many industrial applications.

Published
2023

2. Positron accumulation in the GBAR experiment

Author

P. Blumer, M. Charlton, M. Chung, P. Cladé, P. Comini, P. Crivelli, O. Dalkarov, P. Debu, L. Dodd, A. Douillet, S. Guellati, P.-A. Hervieux, L. Hilico, A. Husson, P. Indelicato, G. Janka, S. Jonsell, J.-P. Karr, B.H. Kim, E.S. Kim, S.K. Kim, Y. Ko, T. Kosinski, N. Kuroda, B.M. Latacz, B. Lee, H. Lee, J. Lee, A.M.M. Leite, K. Lévêque, E. Lim, L. Liszkay, P. Lotrus, D. Lunney, G. Manfredi, B. Mansoulié, M. Matusiak, G. Mornacchi, V. Nesvizhevsky, F. Nez, S. Niang, R. Nishi, B. Ohayon, K. Park, N. Paul, P. Pérez, S. Procureur, B. Radics, C. Regenfus, J.-M. Reymond, S. Reynaud, J.-Y. Roussé, O. Rousselle, A. Rubbia, J. Rzadkiewicz, Y. Sacquin, F. Schmidt-Kaler, M. Staszczak, K. Szymczyk, T. Tanaka, B. Tuchming, B. Vallage, A. Voronin, D.P. van der Werf, S. Wolf, D. Won, S. Wronka, Y. Yamazaki, K.H. Yoo, P. Yzombard, C.J. Baker, Department of Physics [ETH Zürich] (D-PHYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), Swansea University, Ulsan National Institute of Science and Technology (UNIST), Laboratoire Kastler Brossel (LKB [Collège de France]), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Université d'Évry-Val-d'Essonne (UEVE), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Stockholm University, Institute for Basic Science [Daejeon] (IBS), Seoul National University [Seoul] (SNU), Korea University [Seoul], Narodowe Centrum Badań Jądrowych (NCBJ), The University of Tokyo (UTokyo), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), European Organization for Nuclear Research (CERN), Institut Laue-Langevin (ILL), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Johannes Gutenberg - Universität Mainz = Johannes Gutenberg University (JGU), and GBAR

Subjects
Nuclear and High Energy Physics, Accumulator, Antimatter, Positron, Penning trap, Other Fields of Physics, FOS: Physical sciences, Physics - Plasma Physics, [PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph], Plasma Physics (physics.plasm-ph), electron: linear accelerator, positron: capture, gravitation, gas, physics.plasm-ph, Physics::Accelerator Physics, Physics::Atomic Physics, Instrumentation, Antihydrogen, antihydrogen: ion, performance
Abstract

We present a description of the GBAR positron (e+) trapping apparatus, which consists of a three stage Buffer Gas Trap (BGT) followed by a High Field Penning Trap (HFT), and discuss its performance. The overall goal of the GBAR experiment is to measure the acceleration of the neutral antihydrogen (H¯) atom in the terrestrial gravitational field by neutralising a positive antihydrogen ion (H¯+), which has been cooled to a low temperature, and observing the subsequent H¯ annihilation following free fall. To produce one H¯+ ion, about 1010 positrons, efficiently converted into positronium (Ps), together with about 107 antiprotons (p¯), are required. The positrons, produced from an electron linac-based system, are accumulated first in the BGT whereafter they are stacked in the ultra-high vacuum HFT, where we have been able to trap 1.4(2) × 109 positrons in 1100 s. We present a description of the GBAR positron (e+) trapping apparatus, which consists of a three stage Buffer Gas Trap (BGT) followed by a High Field Penning Trap (HFT), and discuss its performance. The overall goal of the GBAR experiment is to measure the acceleration of the neutral antihydrogen (H) atom in the terrestrial gravitational field by neutralising a positive antihydrogen ion (H+), which has been cooled to a low temperature, and observing the subsequent H annihilation following free fall. To produce one H+ ion, about 10^10 positrons, efficiently converted into positronium (Ps), together with about 10^7 antiprotons (p), are required. The positrons, produced from an electron linac-based system, are accumulated first in the BGT whereafter they are stacked in the ultra-high vacuum HFT, where we have been able to trap 1.4(2) x 10^9 positrons in 1100 seconds.

Published
2022

3. Multiscale modelling for fusion and fission materials: the M4F project

Author

M. Sauzay, F. Jiménez, Igor Simonovski, Chu-Chun Fu, P.-W. Ma, Pär Olsson, H. Namburi, G. Bonny, M. Prester, O. Libera, Francesca Boioli, L. Gélébart, Fernando Mota, Philippe Spätig, M.J. Konstantinović, D. Tanguy, Ermile Gaganidze, Mihai-Cosmin Marinica, C. Pareige, N. Kvashin, Karin Vogel, C. Guerrero, Susana Merino, C. Kaden, E. Meslin, M. Hernández-Mayoral, Qamar Hayat, Max Boleininger, L. Kurpaska, Gonzalo de Diego, R.R. Rajakrishnan, M. Clozel, S. Austin, C. Robertson, N. Anento, Lorenzo Malerba, Frédéric Mompiou, Anna Serra, Jarir Aktaa, C.J. Ortiz, P.M. Gueye, Alexander Bakaev, A. Kraych, Jacob B. J. Chapman, Jacek Jagielski, J. Zhao, Benoit Devincre, Dorival Gonçalves, T. Manninen, Ana Ruiz-Moreno, M. Vallet, Michal Trebala, J.P. Balbuena, N. Castin, P. Chekhonin, Frank Bergner, Mickaël Trochet, David Rodney, B. Gómez-Ferrer, Peter Hähner, Nigel M. Jennett, Sergei L. Dudarev, F. Soisson, R. Gatti, M.J. Caturla, A. Ulbricht, G. Kapoor, Tuncay Yalçinkaya, D. Terentyev, Marta Serrano, A. Kuronen, Tymofii Khvan, Simo-Pekka Hannula, L. Dupuy, Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. Doctorat en Física Computacional i Aplicada, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas [Madrid] (CIEMAT), Universidad de Alicante, Karlsruher Institut für Technologie (KIT), Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Centre d'Etude de l'Energie Nucléaire (SCK-CEN), Royal Institute of Technology [Stockholm] (KTH ), CEA- Saclay (CEA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Modélisation de la matière condensée et des interfaces (MMCI), Institut Lumière Matière [Villeurbanne] (ILM), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), European Commission - Joint Research Centre [Petten], Universitat Politècnica de Catalunya [Barcelona] (UPC), LEM, UMR 104, CNRS-ONERA, Université Paris-Saclay (Laboratoire d'étude des microstructures), ONERA-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), UK Atomic Energy Authority (UKAEA), Narodowe Centrum Badań Jądrowych (NCBJ), Groupe de physique des matériaux (GPM), 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), Aalto University, Coventry University (UK), Coventry University, Université de Liège, Centre d'élaboration de matériaux et d'études structurales (CEMES), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Paul Scherrer Institute (PSI), Middle East Technical University [Ankara] (METU), This work has received funding from the Euratom research and training programme 2014-2018 under grant agreement No. 755039 (M4F project)., Universidad de Alicante. Departamento de Física Aplicada, Grupo de Nanofísica, Física de la Materia Condensada, Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-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)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-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)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Helsingin yliopisto = Helsingfors universitet = University of Helsinki, Centrum výzkumu Řež, Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), CIEMAT, University of Alicante, Karlsruhe Institute of Technology, Helmholtz-Zentrum Dresden-Rossendorf, Belgian Nuclear Research Centre, KTH Royal Institute of Technology, Université Paris-Saclay, Centre National de la Recherche Scientifique (CNRS), European Commission Joint Research Centre Institute, BarcelonaTech, UK Atomic Energy Authority, National Centre for Nuclear Research, Université de Rouen, Department of Chemistry and Materials Science, University of Helsinki, Czech Academy of Sciences, Institut za Fiziku, Paul Scherrer Institute, Middle East Technical University, Aalto-yliopisto, Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), and OpenMETU

Subjects
Nuclear and High Energy Physics, Engineering, Fission, Materials Science (miscellaneous), 02 engineering and technology, 01 natural sciences, Fissió nuclear, Multiscale modelling, Física Aplicada, 0103 physical sciences, Fusió nuclear, Fusion, Training programme, QC, Engineering & allied operations, 010302 applied physics, Energies::Energia nuclear [Àrees temàtiques de la UPC], business.industry, TK9001-9401, Nuclear fission, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Nuclear Energy and Engineering, Work (electrical), TA, Systems engineering, Nuclear engineering. Atomic power, M4F project, Nuclear fusion, ddc:620, 0210 nano-technology, business, [CHIM.RADIO]Chemical Sciences/Radiochemistry
Abstract

The M4F project brings together the fusion and fission materials communities working on the prediction of radiation damage production and evolution and their effects on the mechanical behaviour of irradiated ferritic/martensitic (F/M) steels. It is a multidisciplinary project in which several different experimental and computational materials science tools are integrated to understand and model the complex phenomena associated with the formation and evolution of irradiation induced defects and their effects on the macroscopic behaviour of the target materials. In particular the project focuses on two specific aspects: (1) To develop physical understanding and predictive models of the origin and consequences of localised deformation under irradiation in F/M steels; (2) To develop good practices and possibly advance towards the definition of protocols for the use of ion irradiation as a tool to evaluate radiation effects on materials. Nineteen modelling codes across different scales are being used and developed and an experimental validation programme based on the examination of materials irradiated with neutrons and ions is being carried out. The project enters now its 4th year and is close to delivering high-quality results. This paper overviews the work performed so far within the project, highlighting its impact for fission and fusion materials science. Peer Reviewed L. Malerba a,*, M.J. Caturla b, E. Gaganidze c, C. Kaden d, M.J. Konstantinovi´c e, P. Olsson f, C. Robertson g, D. Rodney h, A.M. Ruiz-Moreno i, M. Serrano a, J. Aktaa c, N. Anento j, S. Austin i, A. Bakaev e, J.P. Balbuena b, F. Bergner d, F. Boioli k, M. Boleininger l, G. Bonny e, N. Castin e, J.B. J. Chapman l, P. Chekhonin d, M. Clozel m, B. Devincre k, L. Dupuy g, G. Diego a, S.L. Dudarev l, C.-C. Fu g, R. Gatti k, L. G´el´ebart g, B. G´omez-Ferrer n, D. Gonçalves g, C. Guerrero a, P.M. Gueye n, P. H¨ahner i, S.P. Hannula o, Q. Hayat p, M. Hern´andez-Mayoral a, J. Jagielski m, N. Jennett p, F. Jim´enez a, G. Kapoor d, A. Kraych h, T. Khvan e,q, L. Kurpaska m, A. Kuronen r, N. Kvashin j, O. Libera s, P.-W. Ma l, T. Manninen o, M.-C. Marinica g, S. Merino a, E. Meslin g, F. Mompiou t, F. Mota a, H. Namburi s, C.J. Ortiz a, C. Pareige n, M. Prester u, R.R. Rajakrishnan t, M. Sauzay g, A. Serra j, I. Simonovski i, F. Soisson g, P. Sp¨atig v, D. Tanguy h, D. Terentyev e, M. Trebala o, M. Trochet g, A. Ulbricht d, M.Vallet g, K. Vogel d, T. Yalcinkaya w, J. Zhao r a Centro de Investigaciones Energ´eticas, Medioambientales y Tecnol´ogicas (CIEMAT), Madrid, Spain b Universidad de Alicante, San Vicente del Raspeig, Spain c Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany d Helmholtz-Zentrum Dresden-Rossendorf Ev (HZDR), Rossendorf, Germany e Studiecentrum voor Kernenergie / Centre d’´Etude de l’´Energie Nucl´eaire (SCK CEN), Mol, Belgium f KTH Royal Institute of Technology, Stockholm, Sweden g Universit´e Paris-Saclay, Commissariat `a l’´Energie Atomique et aux ´Energies Alternatives (CEA), Gif-sur-Yvette, France h Institut Lumi`ere Mati`ere (ILM), Centre National de la Recherche Scientifique, Lyon, France i Joint Research Centre (JRC)- European Commission, Petten, the Netherlands j Universitat Polit`ecnica de Catalunya, Barcelona, Spain k Laboratoire d’Etude des Microstructures (LEM), Centre National de la Recherche Scientifique, Chˆatillon, France l United Kingdom Atomic Energy Authority (UKAEA), Culham, UK m Narodowe Centrum Badan Jadrowych (NCBJ), Swierk, Poland n Normandie Univ, UNIROUEN, INSA Rouen, CNRS, Groupe de Physique des Mat´eriaux, 76000 Rouen, France o Aalto University, Espoo, Finland p Coventry University, UK q Universit´e de Li`ege, Belgium r Helsingin Yliopisto, Helsinki, Finland s Centrum Vyzkumu ˇReˇz S.R.O. (CVR), ˇReˇz, Czech Republic t Centre pour l’´Elaboration Elaboration de Mat´eriaux et pour l’´Etude des Structures (CEMES), Centre National de la Recherche Scientifique, Toulouse, France u Institut za Fiziku, Zagreb, Croatia v Paul Scherrer Institut (PSI), Villingen, Switzerland w Middle East Technical University (METU), Ankara, Turkey

Published
2021

4. Preparing for LSST data : Estimating the physical properties of z < 2.5 main-sequence galaxies

Author

Katarzyna Małek, Médéric Boquien, Peter Hurley, V. Buat, Denis Burgarella, D. Donevski, A. Nanni, M. Hamed, A. Pollo, R. Shirley, G. Riccio, National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), Laboratoire d'Astrophysique de Marseille (LAM), and 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)

Subjects
Stellar mass, Population, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, galaxies [infrared], Luminosity, Photometry (optics), surveys, 0103 physical sciences, fundamental parameters [galaxies], Astrophysics::Solar and Stellar Astrophysics, education, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, Luminous infrared galaxy, education.field_of_study, 010308 nuclear & particles physics, Star formation, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Redshift, Galaxy, Space and Planetary Science, photometry [galaxies], Astrophysics::Earth and Planetary Astrophysics, star formation [galaxies], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

Aims. We study how the upcoming Legacy Survey of Space and Time (LSST) data from the Vera C. Rubin Observatory can be employed to constrain the physical properties of normal star-forming galaxies (main-sequence galaxies). Because the majority of the observed LSST objects will have no auxiliary data, we use simulated LSST data and existing real observations to test the reliability of estimates of the physical properties of galaxies, such as their star formation rate (SFR), stellar mass (Mstar), and dust luminosity (Ldust). We focus on normal star-forming galaxies because they form the majority of the galaxy population in the universe and are therefore more likely to be observed with the LSST. Methods. We performed a simulation of LSST observations and uncertainties of 50 385 real galaxies within the redshift range 0 z Herschel Extragalactic Legacy Project (HELP) survey. Our analysis focused on two fields, ELAIS N1 and COSMOS. To obtain the physical properties of the galaxies, we fit their spectral energy distributions (SEDs) using the Code Investigating GALaxy Emission. We simulated the LSST data by convolving the SEDs fitted by employing the multi-wavelength observations. We compared the main galaxy physical properties, such as SFR, Mstar, and Ldust obtained from the fit of the observed multi-wavelength photometry of galaxies (from the UV to the far-IR) to those obtained from the simulated LSST optical measurements alone. Results. We present the catalogue of simulated LSST observations for 23 291 main-sequence galaxies in the ELAIS N1 field and for 9093 galaxies in the COSMOS field. It is available in the HELP virtual observatory. The stellar masses estimated based on the LSST measurements agree with the full UV to far-IR SED estimates because they mainly depend on the UV and optical emission, which is well covered by LSST in the considered redshift range. Instead, we obtain a clear overestimate of the dust-related properties (SFR, Ldust, Mstar) estimated with the LSST alone. They are highly correlated with redshift. We investigate the cause of this overestimate and conclude that it is related to an overestimate of the dust attenuation in both UV and near-IR. We find that it is necessary to employ auxiliary rest-frame mid-IR observations, simulated UV observations, or the far-UV attenuation (AFUV)-Mstar relation to correct for the overestimate. We also deliver the correction formula log10(SFRLSST/SFRreal) = 0.26 ⋅ z2 − 0.94 ⋅ z + 0.87. It is based on the 32 384 MS galaxies detected with Herschel.

Published
2021

5. Accumulation of positrons from a LINAC based source

Author

Young Ju Ko, P.-P. Crépin, N. Paul, JJ Choi, André Rubbia, Jaison Lee, Paul-Antoine Hervieux, P. Debu, P. Comini, M. Staszczak, K.H. Park, P Froehlich, D. P. van der Werf, SK Kim, O. D. Dalkarov, Bruno Mansoulie, D. Won, Jean-Philippe Karr, G Janka, M. Matusiak, Laszlo Liszkay, G Mornacchi, Serge Reynaud, B. Tuchming, C. J. Baker, Laurent Hilico, A. Douillet, F. Nez, J.-Y. Roussé, S. Niang, R. Nishi, D. Lunney, Sebastian Wolf, Ferdinand Schmidt-Kaler, Alexei Voronin, J Gafriller, Moses Chung, Yasunori Yamazaki, Paul Indelicato, C. Regenfus, T. Kosinski, J. Rzadkiewicz, S. Wronka, S. Guellati, L. Dodd, Pierre Cladé, A. Welker, B. Latacz, A. Husson, M. Charlton, A Kleyheeg, Svante Jonsell, B. Vallage, ES Kim, Y. Sacquin, T Louvradoux, BH Kim, Naofumi Kuroda, Giovanni Manfredi, E. Lim, S. Nourbaksh, H Lee, Valery Nesvizhevsky, K.-H. Yoo, K. Lévêque, P. Perez, Johannes Heinrich, B. Radics, Amm Leite, Paolo Crivelli, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Swansea University, Seoul National University [Seoul] (SNU), Ulsan National Institute of Science and Technology (UNIST), Laboratoire Kastler Brossel (LKB (Jussieu)), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), 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), Laboratoire Kastler Brossel (LKB [Collège de France]), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Collège de France (CdF (institution)), P. N. Lebedev Physical Institute of the Russian Academy of Sciences [Moscow] (LPI RAS), Russian Academy of Sciences [Moscow] (RAS), Université d'Évry-Val-d'Essonne (UEVE), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-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)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), Johannes Gutenberg - Universität Mainz (JGU), CERN [Genève], RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Johannes Gutenberg - Universität Mainz = Johannes Gutenberg University (JGU), Département de Physique des Particules (ex SPP) (DPP), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Université Pierre et Marie Curie - Paris 6 (UPMC)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Department of Physics [Umeå], Umeå University, National Center for Nuclear Research (NCBJ), Centre for Water Research (CWR), The University of Western Australia (UWA), iMagX/MIRO, Université Catholique de Louvain = Catholic University of Louvain (UCL), Institut Laue-Langevin (ILL), ILL, Soltan Institute for Nuclear Studies, Institut für Quanteninformationsverarbeitung, Universität Ulm - Ulm University [Ulm, Allemagne], Lomonosov Moscow State University (MSU), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, and Lancaster University

Subjects
010302 applied physics, Physics, Measure (physics), General Physics and Astronomy, 02 engineering and technology, 021001 nanoscience & nanotechnology, Gravitational acceleration, 01 natural sciences, Linear particle accelerator, Positronium, Nuclear physics, Positron, Positron plasma, Positron accumulation, Antimatter, Penning-Malmberg trap, Greaves-Surko trap, GBAR, [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], Antiproton, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Accelerator Physics, Physics::Atomic Physics, 0210 nano-technology, Antihydrogen, ComputingMilieux_MISCELLANEOUS
Abstract

International audience; The GBAR experiment aims to measure the gravitational acceleration of antihydrogen H̅. It will use H̅+ ions formed by the interaction of antiprotons with a dense positronium cloud, which will require about 1010 positrons to produce one H̅+. We present the first results on the positron accumulation, reaching 3.8±0.4×108 e+ collected in 560 s.

Published
2020

6. Sea container inspection with tagged neutrons

Author

Davorin Sudac, S. Bernard, Vladivoj Valkovic, Felix Pino, C.L. Fontana, Antonietta Donzella, M. Gierlik, Alessandro Iovene, Gregory Perret, Sandra Moretto, Wassila El Kanawati, Cedric Carasco, A. Sardet, Marek Moszynski, Jasmina Obhodas, Cyrille Eleon, G. Nebbia, Clement Deyglun, Aldo Zenoni, Bertrand Perot, Carlo Tintori, Guillaume Sannie, CEA Cadarache, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), IRCER - Axe 4 : céramiques sous contraintes environnementales (IRCER-AXE4), Institut de Recherche sur les CERamiques (IRCER), Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), PDS-DEND/SESN/L2MN, Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Laboratoire Ondes et Milieux Complexes (LOMC), Centre National de la Recherche Scientifique (CNRS)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU), Rudjer Boskovic Institute [Zagreb], Institut Ruder Boskovic, Institut Ruđer Bošković (IRB), Ecosystèmes Insulaires Océaniens (UMR 241) (EIO), Université de la Polynésie Française (UPF)-Institut Louis Malardé [Papeete] (ILM), Institut de Recherche pour le Développement (IRD)-Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Dipartimento di Fisica e Astronomia 'Galileo Galilei', Universita degli Studi di Padova, Università degli Studi di Brescia [Brescia], caen (CAEN), National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), The Andrzej Soltan Institute for Nuclear Studies (THE ANDRZEJ SOLTAN INSTITUTE FOR NUCLEAR STUDIES), The Andrzej Soltan Institute for Nuclear Studies, Laboratoire de métrologie des matières nucléaires (IRSN/PDS-DEND/SESN/L2MN), Service d’études en sécurité nucléaire (IRSN/PDS-DEND/SESN), Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de la Polynésie Française (UPF)-Institut Louis Malardé [Papeete] (ILM), Institut de Recherche pour le Développement (IRD), Università degli Studi di Padova = University of Padua (Unipd), and Università degli Studi di Brescia = University of Brescia (UniBs)

Subjects
[PHYS]Physics [physics], Explosive material, 010308 nuclear & particles physics, business.industry, Neutron imaging, Nuclear engineering, TK9001-9401, Alpha particle, 01 natural sciences, Radiation Portal Monitor, Particle detector, Industrial radiography, Nondestructive testing, 0103 physical sciences, Environmental science, Nuclear engineering. Atomic power, Neutron, 010306 general physics, business
Abstract

Neutron inspection of sea-going cargo containers has been widely studied in the past 20 yr to non-intrusively detect terrorist threats, like explosives or Special Nuclear Materials (SNM), and illicit goods, like narcotics or smuggling materials. Fast 14 MeV neutrons are produced by a portable generator with the t(d, n)α fusion reaction, and tagged in both direction and time thanks to the alpha particle detection. This Associated Particle Technique (APT) allows focusing inspection on specific areas of interest in the containers, previously identified as containing suspicious items with X-ray radiographic scanners or radiation portal monitors. We describe the principle of APT for non-nuclear material identification, and for nuclear material detection, then we provide illustrations of the performances for 10 min inspections with significant quantities (kilograms) of explosives, illicit drugs, or SNM, in different cargo cover loads (e.g. metallic, organic, or ceramic matrices).

Published
2021

7. A pulsed high-voltage decelerator system to deliver low-energy antiprotons

Author

Valery Nesvizhevsky, K.-H. Yoo, J.-M. Reymond, P. Comini, B. Latacz, F. Nez, Alexei Voronin, Laurent Hilico, L. Dodd, P.-P. Crépin, M. Staszczak, B.H. Kim, Giuseppe Mornacchi, Jean-Philippe Karr, A. M. M. Leite, G. Janka, N. Garroum, S. Procureur, J.J. Choi, J.-Y. Roussé, J. Rzadkiewicz, Paul Indelicato, Hyo-Suk Lee, Pierre Cladé, M. Matusiak, B. Tuchming, T. Kosinski, P. Debu, Yasunori Yamazaki, Sun-Whe Kim, Eun-San Kim, A. Welker, Paolo Crivelli, M. Charlton, M. Chung, A. Husson, S. Wronka, S. Wolf, B. Vallage, O. D. Dalkarov, Y. Sacquin, C. Regenfus, S. Guellati-Khélifa, Naofumi Kuroda, R. Nishi, Serge Reynaud, Jaison Lee, S. Nourbaksh, Young Ju Ko, A. Douillet, Paul-Antoine Hervieux, D. Lunney, N. Paul, K. Lévêque, Giovanni Manfredi, P. Lotrus, P. Pérez, O. Rousselle, Bruno Mansoulie, E. Lim, Laszlo Liszkay, Svante Jonsell, K.H. Park, S. Niang, Ferdinand Schmidt-Kaler, André Rubbia, D. P. van der Werf, D. Won, B. Radics, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Seoul National University [Seoul] (SNU), CERN [Genève], Swansea University, Ulsan National Institute of Science and Technology (UNIST), Laboratoire Kastler Brossel (LKB [Collège de France]), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, 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), P. N. Lebedev Physical Institute of the Russian Academy of Sciences [Moscow] (LPI RAS), Russian Academy of Sciences [Moscow] (RAS), Université d'Évry-Val-d'Essonne (UEVE), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Stockholm University, Korea University [Seoul], Institute for Basic Science [Daejeon] (IBS), National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), The University of Tokyo (UTokyo), Institut Laue-Langevin (ILL), Johannes Gutenberg - Universität Mainz = Johannes Gutenberg University (JGU), RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Collège de France (CdF (institution)), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-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)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), ILL, and Johannes Gutenberg - Universität Mainz (JGU)

Subjects
Nuclear and High Energy Physics, Drift tube, General Relativity, Ion-optic simulations, CERN Lab, drift tube, Astrophysics::High Energy Astrophysical Phenomena, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Charged-particle optics, fabrication, 7. Clean energy, 01 natural sciences, anti-p: deceleration, law.invention, Nuclear physics, law, 0103 physical sciences, synchrotron, Physics::Atomic Physics, 010306 general physics, Antihydrogen, numerical calculations, Instrumentation, accelerator: design, Physics, antihydrogen, Large Hadron Collider, 010308 nuclear & particles physics, High voltage, Charged particle, Synchrotron, [PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph], Pulse (physics), beam optics, Antiproton, Physics::Accelerator Physics
Abstract

International audience; The GBAR (Gravitational Behavior of Antihydrogen at Rest) experiment at CERN requires efficient deceleration of 100 keV antiprotons provided by the new ELENA synchrotron ring to synthesize antihydrogen. This is accomplished using electrostatic deceleration optics and a drift tube that is designed to switch from -99 kV to ground when the antiproton bunch is inside – essentially a charged particle “elevator” – producing a 1 keV pulse. We describe the simulation, design, construction and successful testing of the decelerator device at -92 kV on-line with antiprotons from ELENA.

Published
2021

8. Crystalline structures of Rb$_2$UBr$_6$ ionic conductor determined by neutron diffraction

Author

Rolland Tellgren, Håkan Rundlöf, Monika Zabłocka-Malicka, Eric Ressouche, Włodzimierz Szczepaniak, Krzysztof Małetka, National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), Magnétisme et Diffusion Neutronique (MDN ), Modélisation et Exploration des Matériaux (MEM), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), Department of Chemistry-Ångström laborator, Uppsala University, Wroclaw University of Science and Technology, and Uppsala University

Subjects
Neutron powder diffraction, Nuclear and High Energy Physics, Solid-state chemistry, Neutron diffraction, Ionic bonding, Materialkemi, Electrolyte, 010403 inorganic & nuclear chemistry, 01 natural sciences, 030218 nuclear medicine & medical imaging, Inorganic Chemistry, 03 medical and health sciences, 0302 clinical medicine, Ionic conductivity, Materials Chemistry, Safety, Risk, Reliability and Quality, Waste Management and Disposal, Instrumentation, Uranium bromide, Oorganisk kemi, Condensed Matter Physics, Solid electrolyte, 0104 chemical sciences, Conductor, Nuclear Energy and Engineering, Phase transitions, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Physical chemistry, Crystalline structure
Abstract

The neutron powder diffraction technique has been used for structural studies of Rb2UBr6 solid electrolyte as a function of temperature. The low-, room-, and high-temperature structures have been determined. At the temperature range of 4.2–80 K, the compound crystallizes in a monoclinic unit cell in the P21/c space group. At 80 K and 853 K, the compound crystallizes in a tetragonal unit cell in the P4/mnc space group. At 300 K, the lattice constants are a = b = 7.745(1) and c = 11.064(1) Å. At the temperature range of 853–960 K, a trigonal phase is observed in the Pʒ̄ml space group.

Published
2020

9. Signatures of UV radiation in low-mass protostars

Author

M. Zoltowski, M. Figueira, A. Mirocha, D. Harsono, M. Gronowski, L. Tychoniec, M. Gladkowski, Agata Karska, Lars E. Kristensen, Uniwersytet Jagielloński w Krakowie = Jagiellonian University (UJ), Nicolaus Copernicus University [Toruń], Polska Akademia Nauk = Polish Academy of Sciences (PAN), Warsaw University of Technology [Warsaw], University of Copenhagen = Københavns Universitet (KU), Universiteit Leiden [Leiden], European Southern Observatory (ESO), Academia Sinica Institute of Astronomy and Astrophysics (ASIAA), Academia Sinica, National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), Laboratoire Ondes et Milieux Complexes (LOMC), Centre National de la Recherche Scientifique (CNRS)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU), Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Polish National Science Center [UMO2018/30/M/ST9/00757, 2016/21/D/ST9/01098], First TEAM grant of the Foundation for Polish Science [POIR.04.04.00-00-5D21/18-00], VILLUM FONDENVillum Foundation [19127], EACOA Fellowship from the East Asian Core Observatories Association, European Research Council European Research Council (ERC) European Commission [811363], Institut Universitaire de France, Programme National 'Physique et Chimie du Milieu Interstellaire' (PCMI) of CNRS/INSU, CNES Centre National D'etudes Spatiales, Polish National Agency for Academic ExchangePolish National Agency for Academic Exchange (NAWA) [PPI/APM/2018/1/00036/U/001], CEA French Atomic Energy Commission, INC/INP, University of Copenhagen = Københavns Universitet (UCPH), Universiteit Leiden, Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), and Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Serpens, Stars: formation, Astrophysics - astrophysics of galaxies, FOS: Physical sciences, Astrophysics, individual objects: Serpens Main [ISM], Radiation, 01 natural sciences, J CO OBSERVATIONS, Stars: protostars, ISM: individual objects: Serpens Main, GAS EMISSION, KEY PROGRAM, 0103 physical sciences, Protostar, DENSE GAS, 010303 astronomy & astrophysics, protostars [stars], molecules [ISM], Astrochemistry, STAR-FORMING REGIONS, [PHYS]Physics [physics], Physics, formation [stars], jets and outflows [ISM], astrochemistry, 010308 nuclear & particles physics, MOLECULAR LINE, Astronomy and Astrophysics, YOUNG STELLAR OBJECTS, GOULD BELT, ISM: molecules, ISM: jets and outflows, 13. Climate action, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), SUBMILLIMETER-CONTINUUM, Low Mass, HERSCHEL-PACS
Abstract

Context: Ultraviolet radiation (UV) influences the physics and chemistry of star-forming regions, but its properties and significance in the immediate surroundings of low-mass protostars are still poorly understood. Aims: We aim to extend the use of the CN/HCN ratio, already established for high-mass protostars, to the low-mass regime to trace and characterize the UV field around low-mass protostars on $\sim 0.6\times0.6$ pc scales. Methods: We present $5'\times5'$ maps of the Serpens Main Cloud encompassing 10 protostars observed with the EMIR receiver at the IRAM 30 m telescope in CN 1-0, HCN 1-0, CS 3-2, and some of their isotopologues. The radiative-transfer code RADEX and the chemical model Nahoon are used to determine column densities of molecules, gas temperature and density, and the UV field strength, $G_\mathrm{0}$. Results: The spatial distribution of HCN and CS are well-correlated with CO 6-5 emission that traces outflows. The CN emission is extended from the central protostars to their immediate surroundings also tracing outflows, likely as a product of HCN photodissociation. The ratio of CN to HCN total column densities ranges from $\sim$1 to 12 corresponding to G$_0$ $\approx$ $10^{1}-10^{3}$ for gas densities and temperatures typical for outflows of low-mass protostars. Conclusions: UV radiation associated with protostars and their outflows is indirectly identified in a significant part of the Serpens Main low-mass star-forming region. Its strength is consistent with the values obtained from the OH and H$_2$O ratios observed with Herschel and compared with models of UV-illuminated shocks. From a chemical viewpoint, the CN to HCN ratio is an excellent tracer of UV fields around low- and intermediate-mass star-forming regions., Comment: 32 pages, 25 figures, accepted by A\&A

Published
2021

10. FRAGMENTATION OF MASSIVE CORES TOWARD THE GALACTIC Hii REGION RCW 120 OBSERVED WITH ALMA

Author

Figueira, M., Zavagno, Annie, Bronfman, L., National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), 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), Departamento de Astronomia (DAS), Société Francaise d’Astronomie et d’Astrophysique (SF2A), P. Di Matteo, O. Creevey, A. Crida, 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), and Beaussier, Catherine

Subjects
[SDU] Sciences of the Universe [physics], high-mass star, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], [SDU]Sciences of the Universe [physics], fragmentation, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Hii region, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], Astrophysics::Galaxy Astrophysics
Abstract

International audience; Feedback from high-mass stars (stellar winds, radiation and photoionization pressure, supernova explosions) can strongly modify the surrounding cloud. As a result, the next generation of stars is affected and can present different physical properties. Using ALMA interferometric observations, we characterized the fragmentation occurring inside the massive cores previously detected with Herschel and being good candidates for high-mass star formation. Most of the fragments have a mass higher than predicted by the thermal Jeans mechanism, thus requiring external turbulence to explain it, and some of the fragments have a mass higher than 8 M which make them interesting targets for further studies. One of the fragment shows different molecular emissions tracing hot core, disk and outflows and is the most promising site for the search of high-mass stars toward RCW 120.

Published
2019

11. Multiwavelength study of the G345.5+1.5 region

Author

Leonardo Bronfman, N. U. Duronea, Cristian Lopez-Calderon, Annie Zavagno, L. A. Nyman, C. Hervías-Caimapo, M. Figueira, 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), National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), and 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)

Subjects
HII regions, Infrared, Ciencias Físicas, Population, FOS: Physical sciences, Context (language use), Astrophysics, 01 natural sciences, Virial theorem, Stellar formation, purl.org/becyt/ford/1 [https], 0103 physical sciences, education, 010303 astronomy & astrophysics, ISM, Physics, education.field_of_study, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, Star formation, Astronomy and Astrophysics, purl.org/becyt/ford/1.3 [https], Galactic plane, Astrophysics - Astrophysics of Galaxies, Astronomía, Stars, Space and Planetary Science, [SDU]Sciences of the Universe [physics], Astrophysics of Galaxies (astro-ph.GA), Spectral energy distribution, CIENCIAS NATURALES Y EXACTAS
Abstract

Star-forming regions are usually studied in the context of Galactic surveys, but dedicated observations are sometimes needed when the study reaches beyond the survey area. Here, we studied the G345.5+1.5 region, which is located slightly above the Galactic plane, to understand its star formation properties. We combined the LABOCA and $^{12}$CO(4$-$3) transition line observations complemented with the Hi-GAL and $\it{Spitzer}$-GLIMPSE surveys to study the star formation toward this region. We used the Clumpfind algorithm to extract the clumps from the 870$\mu$m and $^{12}$CO(4$-$3) data. Radio emission at 36cm was used to estimate the number of HII regions and to remove the contamination from the free-free emission at 870$\mu$m. We employed color-color diagrams and spectral energy distribution slopes to distinguish between prestellar and protostellar clumps. We studied the boundedness of the clumps through the virial parameter. Finally, we estimated the star formation efficiency and star formation rate of the region and used the Schmidt-Kennicutt diagram to compare its ability to form stars. Of the 13 radio sources that we found using the MGPS-2 catalog, 7 are found to be associated with HII regions corresponding to late-B or early-O stars. We found 45 870$\mu$m clumps, and 107 $^{12}$CO clumps. More than 50\% of the clumps are protostellar and bounded and are able to host star formation. High SFR and SFR density values are associated with the region, with an SFE of a few percent. With submillimeter, CO transition, and short-wavelength infrared observations, our study reveals a population of massive stars, protostellar and bound starless clumps, toward G345.5+1.5. This region is therefore actively forming stars, and its location in the starburst quadrant of the Schmidt-Kennicutt diagram is comparable to other star-forming regions found within the Galactic plane., Comment: 20 pages - 15 figures

Published
2019

12. Damage accumulation studies in ion-irradiated oxides: Current status and new perspectives

Author

Alain Chartier, Iwona Jozwik, Orest Dorosh, Jacek Jagielski, Cyprian Mieszczynski, Lionel Thomé, National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), Institute of Electronic Materials Technology (IEMT), Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), 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), Service de la Corrosion et du Comportement des Matériaux dans leur Environnement (SCCME), Département de Physico-Chimie (DPC), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, and This study has been partly supported by the COPIN project: a bilateral agreement between French and Polish nuclear laboratories

Subjects
010302 applied physics, Nuclear and High Energy Physics, Materials science, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], 02 engineering and technology, Advanced materials, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 021001 nanoscience & nanotechnology, 01 natural sciences, Engineering physics, Ion, 0103 physical sciences, Radiation damage, Irradiation, Current (fluid), 0210 nano-technology, Instrumentation
Abstract

International audience; The main purpose of this paper is to summarize our results obtained during research on the radiation behavior of oxides. The paper presents various methods of damage accumulation in irradiated oxides with the special emphasis on correlations between channeling, luminescence and Raman spectroscopy measurements as well as the possibility to obtain quantitative data on polycrystalline materials. The results are interpreted in terms of Multi Step Damage Accumulation model. Without pretending to give a full review of the current trends concerning these studies, we intend to present both a reflection about recent results and a few options for next investigations. This article can thus be regarded as the opening of a discussion on further directions of the research to be conducted on the topic of radiation damage formation in advanced materials for nuclear applications.

Published
2018

13. Advances on the development of the detection system of C-BORD’s rapidly relocatable tagged neutron inspection

Author

Lukasz Swiderski, Bertrand Perot, Luca Stevanato, Marcello Lunardon, P. Sibczynski, K. Grodzicki, Carlo Tintori, A. Sardet, Alessandro Iovene, Guillaume Sannie, Cinzia Sada, Francesca Soramel, Cedric Carasco, Alberto Carnera, Felix Pino, Cristiano Fontana, Marek Moszynski, G. Nebbia, Sandra Moretto, Dipartimento di Fisica e Astronomia 'Galileo Galilei', Universita degli Studi di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Istituto Nazionale di Fisica Nucleare (INFN), Laboratoire de Mesures Nucléaires (LMN), Service Mesures et modélisation des Transferts et des Accidents graves (SMTA), Département Technologie Nucléaire (DTN), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Département Technologie Nucléaire (DTN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Capteurs et Architectures Electroniques (LCAE), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CAEN S.p.A., National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), European Project: 653323,H2020,H2020-BES-2014,C-BORD(2015), Università degli Studi di Padova = University of Padua (Unipd), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA))

Subjects
LaBr3(Ce) scintillator, Computer science, Real-time computing, detection, illicit drugs, Digital analysis, Scintillator, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], plastic scintillator, 01 natural sciences, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Data acquisition, NaI(Tl) scintillator, 0103 physical sciences, non-intrusive inspection, media_common.cataloged_instance, Neutron, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], European union, nuclear instrumentation, media_common, instrumentation, detector, 010308 nuclear & particles physics, Detector, resolution, gamma-rays, explosives, gamma rays, chemical agents, Chemical agents, tagged neutron inspection system, border control, gamma detector, high counting rate
Abstract

The European H2020 project entitled “effective container inspection at border control point” (C-BORD) focuses on the development and in-situ tests of a comprehensive, cost-effective solution for the generalized non-intrusive inspection (NII) of containers and large-volume freight at the European Union border. The opening procedures of suspect containers are time consuming and expensive for economical and safety reasons; therefore, to reduce such operations, the C-BORD project aims to develop a set of technologies that can improve the quality of NII. Among these techniques, a tagged neutron inspection system is being developed in the C-BORD project. It will be a second-line defense system, to be used on sealed containers to detect explosives, illicit drugs, and chemical agents in suspect voxels (elementary volume units). This method employs a beam of tagged neutrons and a set of NaI(Tl) and LaBr[Formula: see text](Ce) scintillators, which will be used to detect prompt gamma rays produced by the neutron interactions. Here we report the advances on the development of the C-BORD’s rapidly relocatable tagged neutron inspection system, in particular the comprehensive characterization of the NaI(Tl) and LaBr[Formula: see text](Ce) gamma detectors (time and energy resolutions, high-count-rate behavior), the digital analysis for time-coincidence measurements and the data acquisition system (DAQ).

Published
2018

14. New perspectives for undoped CaF2 scintillator as a threshold activation neutron detector

Author

Amélie Grabowski, D. Wolski, P. Sibczynski, Adrien Sari, Joanna Iwanowska-Hanke, K. Grodzicki, Felix Pino, Lukasz Swiderski, Marek Moszynski, C.L. Fontana, Carlo Tintori, Agnieszka Syntfeld-Kazuch, Alessandro Iovene, Frederic Laine, Matthieu Hamel, Andrzej Dziedzic, Frederick Carrel, National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), Laboratoire Capteurs et Architectures Electroniques (LCAE), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CAEN S.p.A., Dipartimento di Fisica e Astronomia 'Galileo Galilei', Università degli Studi di Padova = University of Padua (Unipd), European Project: 653323,H2020,H2020-BES-2014,C-BORD(2015), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST), and Universita degli Studi di Padova

Subjects
CaF2, QC1-999, Nuclear material, Scintillator, Radiation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, plastic scintillator, SNM, Nuclear physics, Physics and Astronomy (all), Photofission, Prompt neutron, 0103 physical sciences, non-intrusive inspection, MCNP, Neutron detection, beta-rays, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, nuclear instrumentation, Physics, instrumentation, Neutron-gamma discrimination, detector, 010308 nuclear & particles physics, Special nuclear material, BaF2, Detector, neutrons, linear accelerator (LINAC), Border monitoring, Fluorine, Scintillators, TAD, Threshold activation detection, Uranium, gamma-rays, Neutron temperature, radioactivity, ionizing radiation
Abstract

In this paper we present the prompt photofission neutron detection performance of undoped CaF2 scintillator using Threshold Activation Detection (TAD). The study is carried out in the frame of C-BORD Horizon 2020 project, during which an efficient toolbox for high volume freight non-intrusive inspection (NII) is under development. Technologies for radiation monitoring are the part of the project. Particularly, detection of various radiological threats on country borders plays an important significant role in Homeland Security applications. Detection of illegal transfer of Special Nuclear Material (SNM) - 235U, 233U and 239Pu - is particular due to the potential use for production of nuclear weapon as well as radiological dispersal device (RDD) V known also as a “dirty bomb”. This technique relies on activation of 19F nuclei in the scintillator medium by fast neutrons and registration of high-energy β particles and γ-rays from the decay of reaction products. The radiation from SNM is detected after irradiation in order to avoid detector blinding. Despite the low 19F(n,α)16N or 19F(n,p)19O reaction cross-section, the method could be a good solution for detection of shielded nuclear material. Results obtained with the CaF2 detector were compared with the previous study done for BaF2 and 3He detector. These experimental results were obtained using 252Cf source and 9 MeV Varian Linatron M9 linear accelerator (LINAC). Finally, performance of the prompt neutron detection system based on CaF2 will be validated at Rotterdam Seaport during field trails in 2018.

Published
2018

15. C-BORD - an overview of efficient toolbox for high-volume freight inspection

Author

S. Moretto, Wojciech Gesikowski, Marek Szawlowski, Frederic Laine, Cedric Carasco, Andrzej Dziedzic, Cristiano Fontana, Joanna Iwanowska-Hanke, Frederick Carrel, Felix Pino, Agnieszka Syntfeld-Kazuch, K. Grodzicki, Jerzy Godlewski, Marek Moszynski, Guillaume Sannie, D. Wolski, Lukasz Swiderski, P. Sibczynski, Aleksandra Dolebska, Bertrand Perot, Z. Mianowska, Adrien Sari, A. Sardet, Amélie Grabowski, National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), Custom and Tax Office Poland [Gdynia], Laboratoire Capteurs et Architectures Electroniques (LCAE), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Istituto Nazionale di Fisica Nucleare (INFN), Laboratoire de Mesures Nucléaires (LMN), Service Mesures et modélisation des Transferts et des Accidents graves (SMTA), Département Technologie Nucléaire (DTN), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Département Technologie Nucléaire (DTN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), European Project: 653323,H2020,H2020-BES-2014,C-BORD(2015), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST)

Subjects
Nuclear and High Energy Physics, false positive, Computer science, cargo inspection, drug trafficking, illicit substances, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Transport engineering, Nuclear Medicine and Imaging, 0103 physical sciences, Instrumentation (computer programming), Instrumentation, Radiology, Nuclear Medicine and Imaging, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Throughput (business), non-intrusive freight container inspection, containerized freight, dangerous substances, smuggling, 010308 nuclear & particles physics, Unit of time, End user, Frame (networking), false negative, Interdiction, Toolbox, Container (abstract data type), transport, border control, Radiology
Abstract

International audience; In the frame of the C-BORD project, five innovate technology pillars for Non-Intrusive Inspection (NII) are under development. Freight containers are potential means for smuggling, drug trafficking and transport of dangerous or illicit substances. The goal of the C-BORD project is to increase interdiction of illicit or dangerous materials in containerized freight and deliver new capabilities against critical operational requirements and constrains. Particularly, the aim of the project is to increase throughput of the container per time unit, reduce cost and time of cargo inspection and minimize the false negative and false positive alarm ratios. Finally, thanks to field trials organized during the project, capability of these systems will be proven and the C-BORD Toolbox usefulness will be validated by end users under real conditions at sea and border crosses.

Published
2017

16. Detection sSystem of the first rapidly relocatable Tagged Neutron Inspection System (RRTNIS), developed in the framework of the European H2020 C-BORD project

Author

P. Sibczynski, C.L. Fontana, Lukasz Swiderski, Guillaume Sannie, G. Nebbia, Marek Moszynski, Francesca Soramel, Felix Pino, A. Sardet, Luca Stevanato, Cinzia Sada, Bertrand Perot, K. Grodzicki, Carlo Tintori, Cedric Carasco, Alberto Carnera, Marcello Lunardon, Alessandro Iovene, Sandra Moretto, Dipartimento di Fisica e Astronomia 'Galileo Galilei', Università degli Studi di Padova = University of Padua (Unipd), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Istituto Nazionale di Fisica Nucleare (INFN), Laboratoire de Mesures Nucléaires (LMN), Service Mesures et modélisation des Transferts et des Accidents graves (SMTA), Département Technologie Nucléaire (DTN), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Département Technologie Nucléaire (DTN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Capteurs et Architectures Electroniques (LCAE), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, CAEN S.p.A., National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), European Project: 653323,H2020,H2020-BES-2014,C-BORD(2015), Universita degli Studi di Padova, Laboratoire d'Intégration des Systèmes et des Technologies (LIST), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST)

Subjects
Computer science, cargo inspection, Volume Unit, Digital analysis, Rapidly Relocatable TNIS (RRTNIS), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Tagged Neutron Inspection System (TNIS), chemical agent detection, Data acquisition, 0103 physical sciences, non-intrusive inspection, Explosive detection, media_common.cataloged_instance, Neutron, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], European union, 010306 general physics, media_common, 010308 nuclear & particles physics, Illicit drug detection, border security, Chemical agents, Container (abstract data type), Systems engineering, gamma detector
Abstract

International audience; The European project entitled "effective Container inspection at BORDer control points" (C-BORD) focuses on the development and in-situ tests of a comprehensive cost-effective solution for the generalized Non-Intrusive Inspection (NII) of containers and large-volume freight at the European Union (EU) border. It copes with a large range of targets, including explosives, chemical warfare agents, illicit drugs, tobacco and Special Nuclear Materials. Within the C-BORD project, a new generation of Tagged Neutron Inspection System (TNIS) for cargo containers is foreseen. Unlike its predecessors, this system would be the first Rapidly Relocatable TNIS (RRTNIS). It will be a second-line defense system, to be used on sealed containers in order to detect explosives, illicit drugs and chemical agents in a suspect voxel (elementary volume unit). We report on the status of the RRTNIS system, in particular the overall design, the characterization of the large-volume NaI(Tl) gamma detectors, the digital analysis of the time measurements and the Data Acquisition System (DAQ).

Published
2017

17. Delayed Gamma Measurements in Different Nuclear Research Reactors Bringing Out the Importance of Their Contribution in Gamma Flux Calculations

Author

D. Fourmentel, J. F. Villard, F. Malouch, Luka Snoj, G. Zerovnik, L. Barbot, Vladimir Radulović, M. Tarchalski, Krzysztof Pytel, CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Jozef Stefan Institute [Ljubljana] (IJS), National Centre for Nuclear Research [Otwock], and Narodowe Centrum Badań Jądrowych (NCBJ)

Subjects
Physics, Neutrons, Nuclear and High Energy Physics, Nuclear measurements, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Maria reactor, Ionization chambers, Gamma ray, Flux, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Scram, 7. Clean energy, TRIGA, Nuclear physics, Nuclear Energy and Engineering, Neutron flux, Nuclear fuels, Ionization chamber, Neutron, Electrical and Electronic Engineering, Gamma-rays
Abstract

Neutron and gamma flux levels are key parameters in nuclear research reactors. In Material Testing Reactors, such as the future Jules Horowitz Reactor, under construction at the French Alternative Energies and Atomic Energy Commission (CEA Cadarache, France), the expected gamma flux levels are very high (nuclear heating is of the order of 20 W/g at 100 MWth). As gamma rays deposit their energy in the reactor structures and structural materials it is important to take them into account when designing irradiation devices. There are only a few sensors which allow measurements of the nuclear heating [12]; a recent development at the CEA Cadarache allows measurements of the gamma flux using a miniature ionization chamber (MIC) [3]. The measured MIC response is often compared with calculation using modern Monte Carlo (MC) neutron and photon transport codes, such as TRIPOLI-4 and MCNP6. In these calculations only the production of prompt gamma rays in the reactor is usually modelled thus neglecting the delayed gamma rays. Hence calculations and measurements are usually in better accordance for the neutron flux than for the gamma flux. In this paper we study the contribution of delayed gamma rays to the total MIC signal in order to estimate the systematic error in gamma flux MC calculations. In order to experimentally determine the delayed gamma flux contributions to the MIC response, we performed gamma flux measurements with CEA developed MIC at three different research reactors: the OSIRIS reactor (MTR — 70 MWth at CEA Saclay, France), the TRIGA MARK II reactor (TRIGA — 250 kWth at the Jozef Stefan Institute, Slovenia) and the MARIA reactor (MTR — 30 MWth at the National Center for Nuclear Research, Poland). In order to experimentally assess the delayed gamma flux contribution to the total gamma flux, several reactor shut down (scram) experiments were performed specifically for the purpose of the measurements. Results show that on average about 30 % of the MIC signal is due to the delayed gamma rays. In this paper we describe experiments in each of the three reactors and how we estimate delayed gamma rays with MIC measurements. The results and perspectives are discussed.

Published
2016

18. Design of the rapidly relocatable tagged neutron inspection system of the C-BORD project

Author

Lukasz Swiderski, Marek Moszynski, Guillaume Sannie, G. Nebbia, Cristiano Fontana, Bertrand Perot, P. Sibczynski, Sandra Moretto, Cedric Carasco, Carlo Tintori, Alessandro Iovene, A. Sardet, K. Grodzicki, 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 de Mesures Nucléaires (LMN), Service Mesures et modélisation des Transferts et des Accidents graves (SMTA), Département Technologie Nucléaire (DTN), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Département Technologie Nucléaire (DTN), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire Capteurs et Architectures Electroniques (LCAE), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Dipartimento di Fisica e Astronomia 'Galileo Galilei', Universita degli Studi di Padova, National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), CAEN S.p.A., European Project: 653323,H2020,H2020-BES-2014,C-BORD(2015), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Istituto Nazionale di Fisica Nucleare (INFN), caen (CAEN), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Università degli Studi di Padova = University of Padua (Unipd), and amplexor, amplexor

Subjects
[PHYS.NUCL] Physics [physics]/Nuclear Theory [nucl-th], APT(associated particle technique), Engineering, Reflection (computer programming), APT (associated particle technique), [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], Real-time computing, Index Terms-TNIS (tagged neutron inspection system), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, illicit materials, Data acquisition, Neutron generator, CBRNE threats, 0103 physical sciences, Neutron, Nuclear, Electronics, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Simulation, Monte Carlo simulation, and Explosives) threats, Generator (computer programming), TNIS (tagged neutron inspection system), 010308 nuclear & particles physics, business.industry, Detector, Biological, CBRNE (Chemical, Container (abstract data type), Radiological, business
Abstract

International audience; Within the framework of the European H2020 C-BORD project, aiming at improving container inspection technologies, a compact and "Rapidly Relocatable Tagged Neutron Inspection System", called RRTNIS, is being developed taking into account past EURITRACK experience with a portal TNIS, and the latest technologies in terms of associated particle neutron generator and data acquisition electronics. A dedicated shield surrounding the neutron generator has been designed with MCNP6 to limit the size of the restricted area and the count rate on gamma detectors, which are located very close to the generator. This new design with "reflection" detectors only, i.e. in backscattering position, is indeed more efficient to detect suspect items, like explosives or illicit drugs, in bottom regions of the container, compared to EURITRACK detectors which were mainly located above the container. It also allows designing a relocatable system for different inspection sites like seaports, borders, or other checkpoints. Dose and count rate calculations are presented to determine the restricted area and facilitate the design of the data acquisition electronics, respectively.

Published
2016

19. Measurement and comparison of individual external doses of high-school students living in Japan, France, Poland and Belarus - The 'D-shuttle' project - The '

Author

N Adachi, V Adamovitch, Y Adjovi, K Aida, H Akamatsu, S Akiyama, A Akli, A Ando, T Andrault, H Antonietti, S Anzai, G Arkoun, C Avenoso, D Ayrault, M Banasiewicz, M Banaśkiewicz, L Bernardini, E Bernard, E Berthet, M Blanchard, D Boreyko, K Boros, S Charron, P Cornette, K Czerkas, M Dameron, I Date, M De Pontbriand, F Demangeau, ł Dobaczewski, L Dobrzyński, A Ducouret, M Dziedzic, A Ecalle, V Edon, K Endo, T Endo, Y Endo, D Etryk, M Fabiszewska, S Fang, D Fauchier, F Felici, Y Fujiwara, C Gardais, W Gaul, L Gurin, R Hakoda, I Hamamatsu, K Handa, H Haneda, T Hara, M Hashimoto, T Hashimoto, K Hashimoto, D Hata, M Hattori, R Hayano, R Hayashi, H Higasi, M Hiruta, A Honda, Y Horikawa, H Horiuchi, Y Hozumi, M Ide, S Ihara, T Ikoma, Y Inohara, M Itazu, A Ito, J Janvrin, I Jout, H Kanda, G Kanemori, M Kanno, N Kanomata, T Kato, S Kato, J Katsu, Y Kawasaki, K Kikuchi, P Kilian, N Kimura, M Kiya, M Klepuszewski, E Kluchnikov, Y Kodama, R Kokubun, F Konishi, A Konno, V Kontsevoy, A Koori, A Koutaka, A Kowol, Y Koyama, M Kozioł, M Kozue, O Kravtchenko, W Kruczała, M Kudła, H Kudo, R Kumagai, K Kurogome, A Kurosu, M Kuse, A Lacombe, E Lefaillet, M Magara, J Malinowska, M Malinowski, V Maroselli, Y Masui, K Matsukawa, K Matsuya, B Matusik, M Maulny, P Mazur, C Miyake, Y Miyamoto, K Miyata, M Miyazaki, M Molȩda, T Morioka, E Morita, K Muto, H Nadamoto, M Nadzikiewicz, K Nagashima, M Nakade, C Nakayama, H Nakazawa, Y Nihei, R Nikul, S Niwa, O Niwa, M Nogi, K Nomura, D Ogata, H Ohguchi, J Ohno, M Okabe, M Okada, Y Okada, N Omi, H Onodera, K Onodera, S Ooki, K Oonishi, H Oonuma, H Ooshima, H Oouchi, M Orsucci, M Paoli, M Penaud, C Perdrisot, M Petit, A Piskowski, A Płocharski, A Polis, L Polti, T Potsepnia, D Przybylski, M Pytel, W Quillet, A Remy, C Robert, M Sadowski, M Saito, D Sakuma, K Sano, Y Sasaki, N Sato, T Schneider, C Schneider, K Schwartzman, E Selivanov, M Sezaki, K Shiroishi, I Shustava, A Śniecińska, E Stalchenko, A Staroń, M Stromboni, W Studzińska, H Sugisaki, T Sukegawa, M Sumida, Y Suzuki, K Suzuki, R Suzuki, H Suzuki, W Świderski, M Szudejko, M Szymaszek, J Tada, H Taguchi, K Takahashi, D Tanaka, G Tanaka, S Tanaka, K Tanino, K Tazbir, N Tcesnokova, N Tgawa, N Toda, H Tsuchiya, H Tsukamoto, T Tsushima, K Tsutsumi, H Umemura, M Uno, A Usui, H Utsumi, M Vaucelle, Y Wada, K Watanabe, S Watanabe, K Watase, M Witkowski, T Yamaki, J Yamamoto, T Yamamoto, M Yamashita, M Yanai, K Yasuda, Y Yoshida, A Yoshida, K Yoshimura, M Żmijewska, E Zuclarelli, Fukushima Medical University (FMU), National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), Centre d’étude sur l’Evaluation de la Protection dans le domaine Nucléaire (CEPN), and Institut de Radioprotection et de Sûreté Nucléaire (IRSN)

Subjects
Male, student, Republic of Belarus, Range (biology), [SDV]Life Sciences [q-bio], education, FOS: Physical sciences, Electronic Personal Dosimeter, Radiation Dosage, 030218 nuclear medicine & medical imaging, Education, Electronic personal dosimeters, 03 medical and health sciences, 0302 clinical medicine, Annual dose, Radiation Monitoring, Fukushima Nuclear Accident, Humans, human, Fukushima, Students, Waste Management and Disposal, International comparison, comparative study, High school students, Teaching, Public Health, Environmental and Occupational Health, Belarus, General Medicine, Physics - Medical Physics, External dose, Geography, female, 030220 oncology & carcinogenesis, Background radiation, Residence, Individual dose, Medical Physics (physics.med-ph), France, Poland, radiation dose, Demography
Abstract

Twelve high schools in Japan (of which six are in Fukushima Prefecture), four in France, eight in Poland and two in Belarus cooperated in the measurement and comparison of individual external doses in 2014. In total 216 high-school students and teachers participated in the study. Each participant wore an electronic personal dosimeter 'D-shuttle' for two weeks, and kept a journal of his/her whereabouts and activities. The distributions of annual external doses estimated for each region overlap with each other, demonstrating that the personal external individual doses in locations where residence is currently allowed in Fukushima Prefecture and in Belarus are well within the range of estimated annual doses due to the terrestrial background radiation level of other regions/countries. © 2016 IOP Publishing Ltd.

Published
2016

20. Comparative study of radiation-induced damage in magnesium aluminate spinel by means of IL, CL and RBS/C techniques

Author

Jacek Jagielski, Agata Sidorowicz, Iwona Jozwik, Renata Ratajczak, Gérard Panczer, Anna Wajler, Przemyslaw Jozwik, Nathalie Moncoffre, Lionel Thomé, Grzegorz Gawlik, Institute of Electronic Materials Technology (IEMT), Institute of Electronic Materials Technology, National Centre for Nuclear Research [Otwock], Narodowe Centrum Badań Jądrowych (NCBJ), Institut Lumière Matière [Villeurbanne] (ILM), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Institut de Physique Nucléaire de Lyon (IPNL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM), and 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)

Subjects
010302 applied physics, Chemistry, Radiochemistry, Spinel, Analytical chemistry, Cathodoluminescence, 02 engineering and technology, engineering.material, 021001 nanoscience & nanotechnology, Rutherford backscattering spectrometry, 01 natural sciences, Crystallographic defect, Materials Science(all), Geochemistry and Petrology, 0103 physical sciences, engineering, Radiation damage, General Materials Science, Irradiation, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], 0210 nano-technology, Luminescence, Single crystal
Abstract

International audience; A comparative study of damage accumulation in magnesium aluminate spinel (MgAl2O4) has been conducted using ionoluminescence (IL), cathodoluminescence (CL) and Rutherford Backscattering Spectrometry/channeling (RBS/C) techniques. MgAl2O4 single crystal and polycrystalline samples were irradiated with 320 keV Ar+ ions at fluencies ranging from 1 × 1012 to 2 × 1016 cm−2 in order to create various levels of radiation damage. RBS/C measurements provided quantitative data about damage concentration in the samples. These values were then compared to the luminescence measurements. The results obtained by IL and RBS/C methods demonstrate a two-step character of damage buildup process. The CL data analysis points to the three-step damage accumulation mechanism involving the first defect transformation at fluencies of about 1013 cm−2 and second at about 1015 cm−2. The rate of changes resulting from the formation of nonluminescent recombination centers is clearly nonlinear and cannot be described in terms of continuous accumulation of point defects. Both, IL and CL techniques, appear as new, complementary tools bringing new possibilities in the damage accumulation studies in single- and polycrystalline materials.

Published
2016

21. Characterisation of a radionuclide specific laboratory detector system for the metallurgical industry by Monte Carlo simulations

Author

Aurelian Luca, Aleksi Mattila, Faidra Tzika, Hannah Moser, Teemu Siiskonen, Guillaume Lutter, Pavel Dryak, Jaroslav Šolc, Andre Saraiva, Branko Vodenik, Dirk Arnold, L. Szucs, Tomasz Dziel, Eduardo García-Toraño, O. Burda, Aldo Fazio, V. Peyres, Carlos Augusto Fernandes de Oliveira, Thierry Branger, Jozef Martinkovič, Marco Capogni, Czech Metrology Institute, Bundesamt für Eich- und Vermessungswesen [Wien] (BEV), Laboratoire National Henri Becquerel (LNHB), Département Métrologie Instrumentation & Information (DM2I), Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centro de Investigaciones Energéticas Medioambientales y Tecnológicas [Madrid] (CIEMAT), JRC Institute for Reference Materials and Measurements [Geel] (IRMM), European Commission - Joint Research Centre [Geel] (JRC), Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), IFIN-HH, Jozef Stefan Institute [Ljubljana] (IJS), Instituto Superior Técnico, Universidade Técnica de Lisboa, Magyar Kereskedelmi Engedelyezesi Hivatal (MKEH), Narodowe Centrum Badań Jądrowych (NCBJ), Physikalisch-Technische Bundesanstalt [Braunschweig] (PTB), Slovenský Metrologický Ústav, Radiation and Nuclear Safety Authority [Helsinki] (STUK), Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Laboratoire d'Intégration des Systèmes et des Technologies (LIST (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Département d'instrumentation Numérique (DIN (CEA-LIST)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Agenzia Nazionale per le nuove Tecnologie, l’energia e lo sviluppo economico sostenibile = Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), and Capogni, M.

Subjects
Nuclear engineering, Monte Carlo method, EURAMET, Coincidence summing, Metallurgy, Ionising radiation, Gamma-ray spectrometry, Metrology, Monte Carlo simulation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 010403 inorganic & nuclear chemistry, 01 natural sciences, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Gamma ray spectrometry, Radionuclide, Radiation, 010308 nuclear & particles physics, business.industry, Detector, Metallurgical industry, [INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation, 0104 chemical sciences, Environmental science, Nuclear medicine, business
Abstract

International audience; One of the outputs of the European Metrology Research Programme project "Ionising radiation metrology for the metallurgical industry" (MetroMetal) was a recommendation on a novel radionuclide specific detector system optimised for the measurement of radioactivity in metallurgical samples. The detection efficiency of the recommended system for the standards of cast steel, slag and fume dust developed within the project was characterized by Monte Carlo (MC) simulations performed using different MC codes. Capabilities of MC codes were also tested for simulation of true coincidence summing (TCS) effects for several radionuclides of interest in the metallurgical industry. The TCS correction factors reached up to 32% showing that the TCS effects are of high importance in close measurement geometries met in routine analyses of metallurgical samples.

Published
2015

22. Calculation to Experiment Comparison of SPND Signals in Various Nuclear Reactor Environments

Author

Vladimir Radulović, M. Tarchalski, Veronique Dewynter-Marty, Fadhel Malouch, Loïc Barbot, Damien Fourmentel, Luka Snoj, CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Jozef Stefan Institute [Ljubljana] (IJS), National Centre for Nuclear Research [Otwock], and Narodowe Centrum Badań Jądrowych (NCBJ)

Subjects
Monte Carlo codes, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Computer science, Maria reactor, SPND, Nuclear engineering, Instrumentation, Self-powered neutron detectors, Nuclear reactor, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, TRIGA, law.invention, Nuclear physics, law, Neutron flux, Monte carlo code, Research reactor, gamma flux
Abstract

International audience; In the perspective of irradiation experiments in the future Jules Horowitz Reactor (JHR), the Instrumentation Sensors and Dosimetry Laboratory of CEA Cadarache (France) is developing a numerical tool for SPND design, simulation and operation. In the frame of the SPND numerical tool qualification, dedicated experiments have been performed both in the Slovenian TRIGA Mark II reactor (JSI) and very recently in the French CEA Saclay OSIRIS reactor, as well as a test of two detectors in the core of the Polish MARIA reactor (NCBJ). A full description of experimental set-ups and neutron-gamma calculations schemes are provided in the first part of the paper. Calculation to experiment comparison of the various SPNDs in the different reactors is thoroughly described and discussed in the second part. Presented comparisons show promising final results.

Published
2015

23. Highlight selection of radiochemistry and radiopharmacy developments by editorial board.

Author

Toyohara J, Al-Qahtani M, Huang YY, Cazzola E, Todde S, Furumoto S, Mikolajczak R, Decristoforo C, Gillings N, Yang M, Reilly R, Duatti A, Denkova A, Schirrmacher R, Carlucci G, Seimbille Y, Liu Z, Ellis B, Cornelissen BT, Kopka K, and Bernardes E

Abstract

Background: The Editorial Board of EJNMMI Radiopharmacy and Chemistry releases a biannual highlight commentary to update the readership on trends in the field of radiopharmaceutical development., Main Body: This commentary of highlights has resulted in 21 different topics selected by each coauthoring Editorial Board member addressing a variety of aspects ranging from novel radiochemistry to first in man application of novel radiopharmaceuticals., Conclusion: Trends in radiochemistry and radiopharmacy are highlighted demonstrating the progress in the research field in various topics including new PET-labelling methods, FAPI-tracers and imaging, and radionuclide therapy being the scope of EJNMMI Radiopharmacy and Chemistry., (© 2022. The Author(s).)

Published
2022
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