8 results on '"E. D. Filippov"'
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2. Enhanced x-ray emission arising from laser-plasma confinement by a strong transverse magnetic field
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Amira Guediche, Julien Fuchs, S. A. Pikuz, J. Béard, K. F. Burdonov, S. Bolaños, W. P. Yao, M. V. Starodubtsev, Jack Hare, E. D. Filippov, G. Revet, Igor Yu. Skobelev, Denis Romanovsky, Sophia Chen, S. S. Makarov, Andrea Ciardi, University of Nizhny Novgorod, Joint Institute for High Temperatures of the RAS (JIHT), Russian Academy of Sciences [Moscow] (RAS), Lomonosov Moscow State University (MSU), Institute of Applied Physics of RAS, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA (UMR_8112)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Horia Hulubei National Institute for Physics and Nuclear Engineering, Imperial College London, The National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) [Moscow, Russia], Lobachevsky State University [Nizhni Novgorod], Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique et Atmosphères = Laboratory for Studies of Radiation and Matter in Astrophysics and Atmospheres (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)
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Materials science ,Science ,FOS: Physical sciences ,Magnetically confined plasmas ,01 natural sciences ,Article ,010305 fluids & plasmas ,law.invention ,Magnetization ,law ,Physics::Plasma Physics ,0103 physical sciences ,Emissivity ,Radiative transfer ,010306 general physics ,[PHYS]Physics [physics] ,Multidisciplinary ,Laser-produced plasmas ,Plasma ,Laser ,Physics - Plasma Physics ,Magnetic field ,Plasma Physics (physics.plasm-ph) ,Transverse plane ,Physics::Space Physics ,Medicine ,Atomic physics ,Magnetohydrodynamics ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] - Abstract
We analyze, using experiments and 3D MHD numerical simulations, the dynamics and radiative properties of a plasma ablated by a laser (1 ns, 10$^{12}$-10$^{13}$ W/cm$^2$) from a solid target, as it expands into a homogeneous, strong magnetic field (up to 30 T) transverse to its main expansion axis. We find that as soon as 2 ns after the start of the expansion, the plasma becomes constrained by the magnetic field. As the magnetic field strength is increased, more plasma is confined close to the target and is heated by magnetic compression. We also observe a dense slab that rapidly expands into vacuum after ~ 8 ns; however, this slab contains only ~ 2 % of the total plasma. As a result of the higher density and increased heating of the confined plasma, there is a net enhancement of the total x-ray emissivity induced by the magnetization., 15 pages, 4 figures, Supplementary Information, submitted to PRL
- Published
- 2020
3. Highly-collimated, high-charge and broadband MeV electron beams produced by magnetizing solids irradiated by high-intensity lasers
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G. Revet, M. Safronova, Oswald Willi, Mirela Cerchez, J. Béard, Sophia Chen, Julien Fuchs, M. V. Starodubtsev, E. D. Filippov, S. A. Pikuz, S. Bolanos, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), 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)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Institute of Applied Physics of RAS, Russian Academy of Sciences [Moscow] (RAS), Horia Hulubei National Institute of Physics and Nuclear Engineering (NIPNE), IFIN-HH, Joint Institute for High Temperatures of the RAS (JIHT), The National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) [Moscow, Russia], Heinrich Heine Universität Düsseldorf = Heinrich Heine University [Düsseldorf], ANR-11-IDEX-0004,SUPER,Sorbonne Universités à Paris pour l'Enseignement et la Recherche(2011), ANR-17-CE30-0026,PiNNaCLE,Développement d'une ligne de neutrons pulsés compacte et de haute brillance(2017), European Project: 654148,H2020,H2020-INFRAIA-2014-2015,LASERLAB-EUROPE(2015), European Project: ERC787539,GENESIS, Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), and National Research Nuclear University MEPhI
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Nuclear and High Energy Physics ,Materials science ,Electron ,Plasma ,Laser ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Collimated light ,010305 fluids & plasmas ,Magnetic field ,law.invention ,Acceleration ,Nuclear Energy and Engineering ,law ,[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph] ,0103 physical sciences ,Cathode ray ,lcsh:QC770-798 ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Electrical and Electronic Engineering ,Atomic physics ,010306 general physics ,Beam (structure) ,ComputingMilieux_MISCELLANEOUS - Abstract
Laser irradiation of solid targets can drive short and high-charge relativistic electron bunches over micron-scale acceleration gradients. However, for a long time, this technique was not considered a viable means of electron acceleration due to the large intrinsic divergence (∼50° half-angle) of the electrons. Recently, a reduction in this divergence to 10°–20° half-angle has been obtained, using plasma-based magnetic fields or very high contrast laser pulses to extract the electrons into the vacuum. Here we show that we can further improve the electron beam collimation, down to ∼1.5° half-angle, of a high-charge (6 nC) beam, and in a highly reproducible manner, while using standard stand-alone 100 TW-class laser pulses. This is obtained by embedding the laser-target interaction in an external, large-scale (cm), homogeneous, extremely stable, and high-strength (20 T) magnetic field that is independent of the laser. With upcoming multi-PW, high repetition-rate lasers, this technique opens the door to achieving even higher charges (>100 nC).Laser irradiation of solid targets can drive short and high-charge relativistic electron bunches over micron-scale acceleration gradients. However, for a long time, this technique was not considered a viable means of electron acceleration due to the large intrinsic divergence (∼50° half-angle) of the electrons. Recently, a reduction in this divergence to 10°–20° half-angle has been obtained, using plasma-based magnetic fields or very high contrast laser pulses to extract the electrons into the vacuum. Here we show that we can further improve the electron beam collimation, down to ∼1.5° half-angle, of a high-charge (6 nC) beam, and in a highly reproducible manner, while using standard stand-alone 100 TW-class laser pulses. This is obtained by embedding the laser-target interaction in an external, large-scale (cm), homogeneous, extremely stable, and high-strength (20 T) magnetic field that is independent of t...
- Published
- 2019
4. High-resolution spectroscopic study of hot electron induced copper M-shell charge states emission from laser produced plasmas
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E. D. Filippov, Oldrich Renner, S. A. Pikuz, P. Angelo, Frank B. Rosmej, F. P. Condamine, Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), ELI Beamlines, Institute of Plasma Physics [Praha], Czech Academy of Sciences [Prague] (CAS), National Research Nuclear University MEPhI, ANR-11-IDEX-0004,SUPER,Sorbonne Universités à Paris pour l'Enseignement et la Recherche(2011), and The National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) [Moscow, Russia]
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Nuclear and High Energy Physics ,education.field_of_study ,Radiation ,Materials science ,Resolution (electron density) ,Population ,Ionic bonding ,Plasma ,Laser ,01 natural sciences ,Spectral line ,010305 fluids & plasmas ,law.invention ,Crystal ,law ,[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph] ,0103 physical sciences ,Atomic physics ,010306 general physics ,education ,ComputingMilieux_MISCELLANEOUS ,Line (formation) - Abstract
Theoretically predicted red shifts of the Cu Kα emission from partly populated M-shell ionic states have been studied in experiments performed at the LULI2000 kJ-ns laser facility. The X-ray spectra were recorded by using three spherically bent crystal spectrometers providing a very high spatial (δx ≈ 7 µm) and spectral (λ/Δλ ≈ 3100) resolution. The spatially resolved profiles of Kα lines are characterized by red shifts due to a strong overlap of X-ray lines emitted from low charge states at the initial phase of the laser-matter interaction. Detailed theoretical interpretation of the spectra based on multi-configuration Hartree–Fock simulations provided the population factors of each charge state of 3 s and 3p subshells. The advanced diagnostic presented here provides a vehicle for studying the hot and/or dense plasmas in transient environments and gives important information about hot electrons induced X-ray line emission.
- Published
- 2019
5. Precise wavelength measurements of potassium He- and Li-like satellites emitted from the laser plasma of a mineral target
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S. N. Ryazantsev, M. D. Mishchenko, A. S. Martynenko, Oldrich Renner, I. Yu. Skobelev, M. Krůs, S. A. Pikuz, and E. D. Filippov
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Nuclear and High Energy Physics ,Range (particle radiation) ,Materials science ,Resonance ,Plasma ,Laser ,Atomic and Molecular Physics, and Optics ,Spectral line ,Ion ,law.invention ,Wavelength ,Nuclear Energy and Engineering ,law ,Atomic theory ,lcsh:QC770-798 ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Electrical and Electronic Engineering ,Atomic physics - Abstract
Atomic models of high-Z multicharged ions are extremely complex and require experimental validation. One way to do so is to crosscheck the predicted wavelengths of resonance transitions in He- and Li-like ions against precise spectroscopic measurements that use the spectral lines of H-like ions for spectra calibration; these reference data can be modeled with outstanding precision. However, for elements with Z of at least 15, it is quite difficult to create a hot dense plasma with a large concentration of H-like charge states. To mitigate this issue, the suggestion here is to use as laser targets particular minerals comprising elements with moderate (between 15 and 30) and low (less than 15) Z, with emission from the latter delivering perfect reference lines over a whole range of He- and Li-like moderate-Z emission under examination. This approach is implemented to measure the wavelengths of resonance transitions (1snp → 1s2 for n = 2, 3) in He-like K ions and their dielectronic satellites by irradiating plates of orthoclase (KAlSi3O8) with 0.5-kJ subnanosecond laser pulses. X-ray spectra of the laser-generated plasma contain the investigated lines of highly charged K ions together with precisely known reference lines of H-like Al and Si atoms. The K-shell spectral line wavelengths are measured with a precision of around 0.3 mÅ.
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- 2021
6. Analyzing x-ray emission of target impurities to determine the parameters of recombining laser plasma
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S. A. Pikuz, G. Revet, E. D. Filippov, Julien Fuchs, I. Yu Skobelev, and Shihua Chen
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History ,Materials science ,law ,Impurity ,X-ray ,Plasma ,Atomic physics ,Laser ,Computer Science Applications ,Education ,law.invention - Abstract
In this work, the possibility of the implementation of impurities in the compositions of solid thick targets irradiated by intense lasers is discussed in order to solve problems of optically-thick plasma diagnostics. Calculations were conducted for relative intensities of oxygen resonance lines (H-like—3p–1s, 4p–1s, 5p–1s, 6p–1s, 7p–1s transitions) in a recombination quasi-stationary model to obtain plasma parameters. In the experiment with 0.6 ns, 40 J laser pulses focused to 600 μm focal spot at solid polyvinylidene chloride target the parameters of plasma jet stopped by solid oxidized Teflon obstacle were studied by means of spatially-resolved x-ray spectroscopy.
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- 2020
7. Detailed characterization of laser-produced astrophysically-relevant jets formed via a poloidal magnetic nozzle
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A. A. Soloviev, K. Naughton, Benjamin Khiar, Drew Higginson, R. Riquier, E. D. Filippov, Oliver Portugall, Caterina Riconda, G. Revet, S. A. Pikuz, Tommaso Vinci, S. N. Ryazantsev, I. Yu. Skobelev, D. Khaghani, M. Blecher, H. Pépin, Oswald Willi, Marco Borghesi, J. Béard, K. F. Burdonov, M. V. Starodubtsev, Julien Fuchs, S. N. Chen, Andrea Ciardi, Laboratoire national des champs magnétiques intenses - Toulouse (LNCMI-T), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Laboratoire pour l'utilisation des lasers intenses (LULI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), Laboratoire National des Champs Magnétiques Pulsés (LNCMP), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Queen's University [Belfast] (QUB), Énergie Matériaux Télécommunications - INRS (EMT-INRS), Institut National de la Recherche Scientifique [Québec] (INRS)-Université du Québec à Montréal = University of Québec in Montréal (UQAM), Joint Institute for High Temperatures of the RAS (JIHT), Russian Academy of Sciences [Moscow] (RAS), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Université Pierre et Marie Curie - Paris 6 (UPMC)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Don State Technical University, Institute of Applied Physics (IAP, Nizhny Novgorod), Dipartimento di Fisica 'Giuseppe Occhialini' = Department of Physics 'Giuseppe Occhialini' [Milano-Bicocca], Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), Institut für Laser und Plasmaphysik, Heinrich Heine Universität Düsseldorf = Heinrich Heine University [Düsseldorf], École normale supérieure - Paris (ENS Paris), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), and Università degli Studi di Milano-Bicocca [Milano] (UNIMIB)
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Astrophysical plasmas ,Nuclear and High Energy Physics ,Tokamak ,Atmospheric-pressure plasma ,Outflows ,01 natural sciences ,010305 fluids & plasmas ,law.invention ,Magnetohydrodynamics ,law ,Physics::Plasma Physics ,0103 physical sciences ,Jets ,Magnetic pressure ,010306 general physics ,Magnetosphere particle motion ,ComputingMilieux_MISCELLANEOUS ,Physics ,[PHYS]Physics [physics] ,Jet (fluid) ,Radiation ,Plasma ,Magnetic field ,[PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con] ,Atomic physics ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,Laser-plasma interactions - Abstract
The collimation of astrophysically-relevant plasma ejecta in the form of narrow jets via a poloidal magnetic field is studied experimentally by irradiating a target situated in a 20 T axial magnetic field with a 40 J, 0.6 ns, 0.7 mm diameter, high-power laser. The dynamics of the plasma shaping by the magnetic field are studied over 70 ns and up to 20 mm from the source by diagnosing the electron density, temperature and optical self-emission. These show that the initial expansion of the plasma is highly magnetized, which leads to the formation of a cavity structure when the kinetic plasma pressure compresses the magnetic field, resulting in an oblique shock [A. Ciardi et al., Phys. Rev. Lett. 110, 025002 (2013)]. The resulting poloidal magnetic nozzle collimates the plasma into a narrow jet [B. Albertazzi et al., Science 346, 325 (2014)]. At distances far from the target, the jet is only marginally magnetized and maintains a high aspect ratio due to its high Mach-number (M∼20) and not due to external magnetic pressure. The formation of the jet is evaluated over a range of laser intensities (1012–1013 W/cm2), target materials and orientations of the magnetic field. Plasma cavity formation is observed in all cases and the viability of long-range jet formation is found to be dependent on the orientation of the magnetic field.
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- 2017
8. Parameters of supersonic astrophysically-relevant plasma jets collimating via poloidal magnetic field measured by x-ray spectroscopy method
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S. N. Ryazantsev, Drew Higginson, Julien Fuchs, E. D. Filippov, Shihua Chen, D. Khaghani, G. Revet, I. Yu. Skobelev, and S. A. Pikuz
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Physics ,History ,X-ray spectroscopy ,business.industry ,Plasma ,01 natural sciences ,Collimated light ,010305 fluids & plasmas ,Computer Science Applications ,Education ,Magnetic field ,Optics ,0103 physical sciences ,Supersonic speed ,Atomic physics ,010306 general physics ,business - Published
- 2016
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