1
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Wasser F, Zähter Ş, Sokol M, Rivers M, Atzeni S, Condamine FP, Cristoforetti G, Fauvel G, Fischer N, Gizzi LA, Hannasch A, Hesse M, Laštovička T, Lutz P, Rubovič P, Schaumann G, Schott N, Singh RL, Theobald W, Weber S, Ditmire T, Forner T, Roth M. Full aperture backscatter diagnostics for characterization of laser plasma instabilities at the extreme light infrastructure (ELI) beamlines. Rev Sci Instrum 2023; 94:093503. [PMID: 37737696 DOI: 10.1063/5.0153874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 09/04/2023] [Indexed: 09/23/2023]
Abstract
We report on the commissioning of a full aperture backscatter diagnostics station for the kilojoule, nanosecond high repetition rate L4n laser operating at a wavelength of 527 nm at the Extreme Light Infrastructure (ELI) - Beamlines, Dolni Brezany, Czech Republic. Light scattered back from laser-plasma interaction into the cone of the final focusing lens is captured and split into different channels to measure the signatures of laser plasma instabilities from stimulated Brillouin scattering, stimulated Raman scattering, and two plasmon decay with respect to back scattered energy, its spectrum, and its temporal profile. The performance was confirmed in a commissioning experiment with more than 800 shots at laser intensities ranging from 0.5 × 1013 to 1.1 × 1015 W cm-2. These diagnostics are permanently installed at ELI Beamlines, and can be used to understand the details of laser-plasma interactions in experiments with kJ and 527 nm light. The large number of shots that can be collected in an experimental campaign will allow us to study the details of the laser-plasma interaction with a high level of confidence.
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Affiliation(s)
- F Wasser
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
- IU Internationale Hochschule GmbH, Darmstädter Landstrasse 110, 60598 Frankfurt am Main, Germany
| | - Ş Zähter
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
| | - M Sokol
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
| | - M Rivers
- University of Texas, 110 Inner Campus Dr., Austin, Texas 78712, USA
| | - S Atzeni
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
| | - F P Condamine
- Extreme Light Infrastructure ERIC, ELI-Beamlines Facility, 25241 Dolní Břežany, Czech Republic
| | | | - G Fauvel
- Extreme Light Infrastructure ERIC, ELI-Beamlines Facility, 25241 Dolní Břežany, Czech Republic
| | - N Fischer
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
| | - L A Gizzi
- Intense Laser Irradiation Laboratory, INO-CNR, Pisa, Italy
| | - A Hannasch
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
| | - M Hesse
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
| | - T Laštovička
- Extreme Light Infrastructure ERIC, ELI-Beamlines Facility, 25241 Dolní Břežany, Czech Republic
| | - P Lutz
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
| | - P Rubovič
- Extreme Light Infrastructure ERIC, ELI-Beamlines Facility, 25241 Dolní Břežany, Czech Republic
| | - G Schaumann
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
| | - N Schott
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
- Technische Universität Darmstadt, Schlossgartenstrasse 9, 64289 Darmstadt, Germany
| | - R L Singh
- Extreme Light Infrastructure ERIC, ELI-Beamlines Facility, 25241 Dolní Břežany, Czech Republic
| | - W Theobald
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
| | - S Weber
- Extreme Light Infrastructure ERIC, ELI-Beamlines Facility, 25241 Dolní Břežany, Czech Republic
| | - T Ditmire
- University of Texas, 110 Inner Campus Dr., Austin, Texas 78712, USA
| | - T Forner
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
| | - M Roth
- Focused Energy GmbH, Im Tiefen See 45, 64293 Darmstadt, Germany
- Technische Universität Darmstadt, Schlossgartenstrasse 9, 64289 Darmstadt, Germany
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2
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Ehret M, Kochetkov Y, Abe Y, Law KFF, Bukharskii N, Stepanischev V, Fujioka S, d'Humières E, Zielbauer B, Bagnoud V, Schaumann G, Somekawa T, Roth M, Tikhonchuk V, Santos JJ, Korneev P. Kilotesla plasmoid formation by a trapped relativistic laser beam. Phys Rev E 2022; 106:045211. [PMID: 36397600 DOI: 10.1103/physreve.106.045211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
A strong quasistationary magnetic field is generated in hollow targets with curved internal surface under the action of a relativistically intense picosecond laser pulse. Experimental data evidence the formation of quasistationary strongly magnetized plasma structures decaying on a hundred picoseconds timescale, with the magnetic field strength of the kilotesla scale. Numerical simulations unravel the importance of transient processes during the magnetic field generation and suggest the existence of fast and slow regimes of plasmoid evolution depending on the interaction parameters. The proposed setup is suited for perspective highly magnetized plasma application and fundamental studies.
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Affiliation(s)
- M Ehret
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications (CELIA), UMR 5107, Talence, France
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - Yu Kochetkov
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - Y Abe
- Graduate School of Engineering, Osaka University, Japan
- Institute of Laser Engineering, Osaka University, Japan
| | - K F F Law
- Institute of Laser Engineering, Osaka University, Japan
| | - N Bukharskii
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - V Stepanischev
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - S Fujioka
- Institute of Laser Engineering, Osaka University, Japan
| | - E d'Humières
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications (CELIA), UMR 5107, Talence, France
| | - B Zielbauer
- Plasma Physik/PHELIX, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - V Bagnoud
- Plasma Physik/PHELIX, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - G Schaumann
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - T Somekawa
- Institute of Laser Engineering, Osaka University, Japan
- Institute for Laser Technology, 1-8-4 Utsubohonmachi, Osaka 550-0004, Japan
| | - M Roth
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - V Tikhonchuk
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications (CELIA), UMR 5107, Talence, France
- ELI-Beamlines, Institute of Physics Academy of Sciences of the Czech Republic, Dolní Břežany, Czech Republic
| | - J J Santos
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications (CELIA), UMR 5107, Talence, France
| | - Ph Korneev
- National Research Nuclear University MEPhI, Moscow, Russian Federation
- P. N. Lebedev Physical Institute of RAS, Moscow, Russian Federation
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3
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Kochetkov IV, Bukharskii ND, Ehret M, Abe Y, Law KFF, Ospina-Bohorquez V, Santos JJ, Fujioka S, Schaumann G, Zielbauer B, Kuznetsov A, Korneev P. Neural network analysis of quasistationary magnetic fields in microcoils driven by short laser pulses. Sci Rep 2022; 12:13734. [PMID: 35962017 PMCID: PMC9374746 DOI: 10.1038/s41598-022-17202-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 07/21/2022] [Indexed: 11/09/2022] Open
Abstract
Optical generation of kilo-tesla scale magnetic fields enables prospective technologies and fundamental studies with unprecedentedly high magnetic field energy density. A question is the optimal configuration of proposed setups, where plenty of physical phenomena accompany the generation and complicate both theoretical studies and experimental realizations. Short laser drivers seem more suitable in many applications, though the process is tangled by an intrinsic transient nature. In this work, an artificial neural network is engaged for unravelling main features of the magnetic field excited with a picosecond laser pulse. The trained neural network acquires an ability to read the magnetic field values from experimental data, extremely facilitating interpretation of the experimental results. The conclusion is that the short sub-picosecond laser pulse may generate a quasi-stationary magnetic field structure living on a hundred picosecond time scale, when the induced current forms a closed circuit.
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Affiliation(s)
- Iu V Kochetkov
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - N D Bukharskii
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - M Ehret
- Centre Lasers Intenses et Applications (CELIA), UMR 5107, Université de Bordeaux - CNRS - CEA, Talence, France.,Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | - Y Abe
- Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - K F F Law
- Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | | | - J J Santos
- Centre Lasers Intenses et Applications (CELIA), UMR 5107, Université de Bordeaux - CNRS - CEA, Talence, France
| | - S Fujioka
- Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - G Schaumann
- Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany
| | | | - A Kuznetsov
- National Research Nuclear University MEPhI, Moscow, Russian Federation
| | - Ph Korneev
- National Research Nuclear University MEPhI, Moscow, Russian Federation. .,Lebedev Physical Institute, Moscow, Russian Federation.
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4
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Sander S, Ebert T, Hartnagel D, Hesse M, Pan X, Schaumann G, Šmíd M, Falk K, Roth M. Microstructured layered targets for improved laser-induced x-ray backlighters. Phys Rev E 2021; 104:065207. [PMID: 35030937 DOI: 10.1103/physreve.104.065207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 12/08/2021] [Indexed: 06/14/2023]
Abstract
We present the usage of two-layer targets with laser-illuminated front-side microstructures for x-ray backlighter applications. The targets consisted of a silicon front layer and copper back side layer. The structured layer was irradiated by the 500-fs PHELIX laser with an intensity above 10^{20}Wcm^{-2}. The total emission and one-dimensional extent of the copper Kα x-ray emission as well as a wide spectral range between 7.9 and 9.0 keV were recorded with an array of crystal spectrometers. The measurements show that the front-side modifications of the silicon in the form of conical microstructures maintain the same peak brightness of the Kα emission as flat copper foils while suppressing the thermal emission background significantly. The observed Kα source sizes can be influenced by tilting the conical microstructures with respect to the laser axis. Overall, the recorded copper Kα photon yields were in the range of 10^{11}sr^{-1}, demonstrating the suitability of these targets for probing applications without subjecting the probed material to additional heating from thermal line emission.
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Affiliation(s)
- S Sander
- Institut für Kernphysik, Fachbereich Physik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - T Ebert
- Institut für Kernphysik, Fachbereich Physik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - D Hartnagel
- Institut für Kernphysik, Fachbereich Physik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - M Hesse
- Institut für Kernphysik, Fachbereich Physik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - X Pan
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
| | - G Schaumann
- Institut für Kernphysik, Fachbereich Physik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - M Šmíd
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - K Falk
- Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
- Technische Universität Dresden, 01062 Dresden, Germany
- Institute of Physics of the ASCR, 182 21 Prague, Czech Republic
| | - M Roth
- Institut für Kernphysik, Fachbereich Physik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
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5
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Zimmer M, Scheuren S, Ebert T, Schaumann G, Schmitz B, Hornung J, Bagnoud V, Rödel C, Roth M. Analysis of laser-proton acceleration experiments for development of empirical scaling laws. Phys Rev E 2021; 104:045210. [PMID: 34781535 DOI: 10.1103/physreve.104.045210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 09/13/2021] [Indexed: 06/13/2023]
Abstract
Numerous experiments on laser-driven proton acceleration in the MeV range have been performed with a large variety of laser parameters since its discovery around the year 2000. Both experiments and simulations have revealed that protons are accelerated up to a maximum cut-off energy during this process. Several attempts have been made to find a universal model for laser proton acceleration in the target normal sheath acceleration regime. While these models can qualitatively explain most experimental findings, they can hardly be used as predictive models, for example, for the energy cut-off of accelerated protons, as many of the underlying parameters are often unknown. Here we analyze experiments on laser proton acceleration in which scans of laser and target parameters were performed. We derive empirical scaling laws from these parameter scans and combine them in a scaling law for the proton energy cut-off that incorporates the laser pulse energy, the laser pulse duration, the focal spot radius, and the target thickness. Using these scaling laws, we give examples for predicting the proton energy cut-off and conversion efficiency for state-of-the-art laser systems.
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Affiliation(s)
- M Zimmer
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - S Scheuren
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - T Ebert
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - G Schaumann
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - B Schmitz
- Institute for Accelerator Science and Electromagnetic Fields, Technical University of Darmstadt, Schlossgartenstr. 8, 64289 Darmstadt, Germany
| | - J Hornung
- GSI Helmholtz Centre for Heavy Ion Research, Planckstr. 1, 64291 Darmstadt, Germany
- Friedrich-Schiller-Universität Jena, Fürstengraben 1, 07743 Jena, Germany
- Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany
| | - V Bagnoud
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
- GSI Helmholtz Centre for Heavy Ion Research, Planckstr. 1, 64291 Darmstadt, Germany
| | - C Rödel
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - M Roth
- Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstr. 9, 64289 Darmstadt, Germany
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6
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Hesse M, Ebert T, Zimmer M, Scheuren S, Schaumann G, Roth M. Spatially resolved online particle detector using scintillators for laser-driven particle sources. Rev Sci Instrum 2021; 92:093302. [PMID: 34598491 DOI: 10.1063/5.0052507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
Laser-based particle accelerators have been an active field of research for over two decades moving from laser systems capable of one shot every hour to systems able to deliver repetition rates in the Hz regime. Based on the advancements in laser technology, the corresponding detection methods need to develop from single to multiple use with high readout speed. Here, we present an online compact tracker of particles using scintillators with nine resolvable energy levels and a spatial resolution of 3.6 × 3.6 mm2 over the whole active area. This paper describes the design and construction of the detector, which is based on pixellated scintillators embedded inside an absorber matrix. The scintillator pixels are fiberoptically coupled to a camera system for online readout and analysis. Calibration with a radioactive source and first experimental data measuring laser accelerated ions at the PHELIX laser at GSI, Darmstadt, Germany, are presented and discussed.
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Affiliation(s)
- M Hesse
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - T Ebert
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - M Zimmer
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - S Scheuren
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - G Schaumann
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
| | - M Roth
- Technische Universität Darmstadt, Department of Physics, Institut für Kernphysik, Schlossgartenstr. 9, 64289 Darmstadt, Germany
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7
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Bailly-Grandvaux M, Santos JJ, Bellei C, Forestier-Colleoni P, Fujioka S, Giuffrida L, Honrubia JJ, Batani D, Bouillaud R, Chevrot M, Cross JE, Crowston R, Dorard S, Dubois JL, Ehret M, Gregori G, Hulin S, Kojima S, Loyez E, Marquès JR, Morace A, Nicolaï P, Roth M, Sakata S, Schaumann G, Serres F, Servel J, Tikhonchuk VT, Woolsey N, Zhang Z. Guiding of relativistic electron beams in dense matter by laser-driven magnetostatic fields. Nat Commun 2018; 9:102. [PMID: 29317653 PMCID: PMC5760627 DOI: 10.1038/s41467-017-02641-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 12/15/2017] [Indexed: 11/08/2022] Open
Abstract
Intense lasers interacting with dense targets accelerate relativistic electron beams, which transport part of the laser energy into the target depth. However, the overall laser-to-target energy coupling efficiency is impaired by the large divergence of the electron beam, intrinsic to the laser-plasma interaction. Here we demonstrate that an efficient guiding of MeV electrons with about 30 MA current in solid matter is obtained by imposing a laser-driven longitudinal magnetostatic field of 600 T. In the magnetized conditions the transported energy density and the peak background electron temperature at the 60-μm-thick target's rear surface rise by about a factor of five, as unfolded from benchmarked simulations. Such an improvement of energy-density flux through dense matter paves the ground for advances in laser-driven intense sources of energetic particles and radiation, driving matter to extreme temperatures, reaching states relevant for planetary or stellar science as yet inaccessible at the laboratory scale and achieving high-gain laser-driven thermonuclear fusion.
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Affiliation(s)
- M Bailly-Grandvaux
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - J J Santos
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France.
| | - C Bellei
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - P Forestier-Colleoni
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - S Fujioka
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - L Giuffrida
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - J J Honrubia
- ETSI Aeronáutica y del Espacio, Universidad Politécnica de Madrid, Plaza del Cardenal Cisneros 3, Madrid, 28040, Spain
| | - D Batani
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - R Bouillaud
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - M Chevrot
- LULI, UMR 7605, CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, UPMC: Sorbonne Universités, F-91128, Palaiseau cedex, France
| | - J E Cross
- Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK
| | - R Crowston
- Department of Physics, University of York, Heslington, YO10 5DD, UK
| | - S Dorard
- LULI, UMR 7605, CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, UPMC: Sorbonne Universités, F-91128, Palaiseau cedex, France
| | - J-L Dubois
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - M Ehret
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstrasse 9, 64289, Darmstadt, Germany
| | - G Gregori
- Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU, UK
| | - S Hulin
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - S Kojima
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - E Loyez
- LULI, UMR 7605, CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, UPMC: Sorbonne Universités, F-91128, Palaiseau cedex, France
| | - J-R Marquès
- LULI, UMR 7605, CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, UPMC: Sorbonne Universités, F-91128, Palaiseau cedex, France
| | - A Morace
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Ph Nicolaï
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - M Roth
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstrasse 9, 64289, Darmstadt, Germany
| | - S Sakata
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - G Schaumann
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstrasse 9, 64289, Darmstadt, Germany
| | - F Serres
- LULI, UMR 7605, CNRS, Ecole Polytechnique, CEA, Université Paris-Saclay, UPMC: Sorbonne Universités, F-91128, Palaiseau cedex, France
| | - J Servel
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - V T Tikhonchuk
- Univ. Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405, Talence, France
| | - N Woolsey
- Department of Physics, University of York, Heslington, YO10 5DD, UK
| | - Z Zhang
- Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, 565-0871, Japan
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8
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Schumacher D, Bedacht S, Blažević A, Busold S, Cayzac W, Frank A, Heßling T, Kraus D, Ortner A, Schaumann G, Roth M. Temperature measurement of hohlraum radiation for energy loss experiments in indirectly laser heated carbon plasma. Phys Rev E 2017; 96:043210. [PMID: 29347630 DOI: 10.1103/physreve.96.043210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Indexed: 11/07/2022]
Abstract
For ion energy loss measurements in plasmas with near solid densities, an indirect laser heating scheme for carbon foils has been developed at GSI Helmholtzzentrum für Schwerionenforschung GmbH (Darmstadt, Germany). To achieve an electron density of 10^{22}cm^{3} and an electron temperature of 10-30eV, two carbon foils with an areal density of 100μg/cm^{2} heated in a double-hohlraum configuration have been chosen. In this paper we present the results of temperature measurements of both primary and secondary hohlraums for two different hohlraum designs. They were heated by the PHELIX laser with a wavelength of 527nm and an energy of 150J in 1.5ns. For this purpose the temperature has been investigated by an x-ray streak camera with a transmission grating as the dispersive element.
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Affiliation(s)
- D Schumacher
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - S Bedacht
- Technische Universität Darmstadt, Darmstadt, Germany
| | - A Blažević
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany.,Helmholtzinstitut Jena, Jena, Germany
| | - S Busold
- Technische Universität Darmstadt, Darmstadt, Germany
| | - W Cayzac
- CEA - DAM Ile de France, Bruyères-le-Châtel, France
| | - A Frank
- Helmholtzinstitut Jena, Jena, Germany
| | - T Heßling
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - D Kraus
- Helmholtzzentrum Dresden-Rossendorf, Dresden, Germany
| | - A Ortner
- Technische Universität Darmstadt, Darmstadt, Germany
| | - G Schaumann
- Technische Universität Darmstadt, Darmstadt, Germany
| | - M Roth
- Technische Universität Darmstadt, Darmstadt, Germany
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9
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Kraus D, Vorberger J, Gericke DO, Bagnoud V, Blažević A, Cayzac W, Frank A, Gregori G, Ortner A, Otten A, Roth F, Schaumann G, Schumacher D, Siegenthaler K, Wagner F, Wünsch K, Roth M. Probing the complex ion structure in liquid carbon at 100 GPa. Phys Rev Lett 2013; 111:255501. [PMID: 24483747 DOI: 10.1103/physrevlett.111.255501] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Indexed: 06/03/2023]
Abstract
We present the first direct experimental test of the complex ion structure in liquid carbon at pressures around 100 GPa, using spectrally resolved x-ray scattering from shock-compressed graphite samples. Our results confirm the structure predicted by ab initio quantum simulations and demonstrate the importance of chemical bonds at extreme conditions similar to those found in the interiors of giant planets. The evidence presented here thus provides a firmer ground for modeling the evolution and current structure of carbon-bearing icy giants like Neptune, Uranus, and a number of extrasolar planets.
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Affiliation(s)
- D Kraus
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - J Vorberger
- Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Straße 38, 01187 Dresden, Germany
| | - D O Gericke
- Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - V Bagnoud
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | - A Blažević
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | - W Cayzac
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany and Université de Bordeaux-CEA-CNRS CELIA UMR 5107, 351 Cours de la Libération, 33405 Talence, France
| | - A Frank
- Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany
| | - G Gregori
- Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - A Ortner
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - A Otten
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - F Roth
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - G Schaumann
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - D Schumacher
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - K Siegenthaler
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - F Wagner
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - K Wünsch
- Centre for Fusion, Space and Astrophysics, Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom and Tessella, 26 The Quadrant, Abingdon OX14 3YS, United Kingdom
| | - M Roth
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
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10
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Roth M, Jung D, Falk K, Guler N, Deppert O, Devlin M, Favalli A, Fernandez J, Gautier D, Geissel M, Haight R, Hamilton CE, Hegelich BM, Johnson RP, Merrill F, Schaumann G, Schoenberg K, Schollmeier M, Shimada T, Taddeucci T, Tybo JL, Wagner F, Wender SA, Wilde CH, Wurden GA. Bright laser-driven neutron source based on the relativistic transparency of solids. Phys Rev Lett 2013; 110:044802. [PMID: 25166169 DOI: 10.1103/physrevlett.110.044802] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Indexed: 06/03/2023]
Abstract
Neutrons are unique particles to probe samples in many fields of research ranging from biology to material sciences to engineering and security applications. Access to bright, pulsed sources is currently limited to large accelerator facilities and there has been a growing need for compact sources over the recent years. Short pulse laser driven neutron sources could be a compact and relatively cheap way to produce neutrons with energies in excess of 10 MeV. For more than a decade experiments have tried to obtain neutron numbers sufficient for applications. Our recent experiments demonstrated an ion acceleration mechanism based on the concept of relativistic transparency. Using this new mechanism, we produced an intense beam of high energy (up to 170 MeV) deuterons directed into a Be converter to produce a forward peaked neutron flux with a record yield, on the order of 10(10) n/sr. We present results comparing the two acceleration mechanisms and the first short pulse laser generated neutron radiograph.
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Affiliation(s)
- M Roth
- Institut für Kernphysik, Technische Universität Darmstadt, Schloßgartenstrasse 9, D-64289 Darmstadt, Germany and Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D Jung
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - K Falk
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - N Guler
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - O Deppert
- Institut für Kernphysik, Technische Universität Darmstadt, Schloßgartenstrasse 9, D-64289 Darmstadt, Germany
| | - M Devlin
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A Favalli
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J Fernandez
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D Gautier
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Geissel
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - R Haight
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C E Hamilton
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - B M Hegelich
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R P Johnson
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - F Merrill
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - G Schaumann
- Institut für Kernphysik, Technische Universität Darmstadt, Schloßgartenstrasse 9, D-64289 Darmstadt, Germany
| | - K Schoenberg
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Schollmeier
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - T Shimada
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T Taddeucci
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J L Tybo
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - F Wagner
- Institut für Kernphysik, Technische Universität Darmstadt, Schloßgartenstrasse 9, D-64289 Darmstadt, Germany
| | - S A Wender
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C H Wilde
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - G A Wurden
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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Börner M, Fils J, Frank A, Blažević A, Hessling T, Pelka A, Schaumann G, Schökel A, Schumacher D, Basko MM, Maruhn J, Tauschwitz A, Roth M. Development of a Nomarski-type multi-frame interferometer as a time and space resolving diagnostics for the free electron density of laser-generated plasma. Rev Sci Instrum 2012; 83:043501. [PMID: 22559530 DOI: 10.1063/1.3701366] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This article reports on the development and set-up of a Nomarski-type multi-frame interferometer as a time and space resolving diagnostics of the free electron density in laser-generated plasma. The interferometer allows the recording of a series of 4 images within 6 ns of a single laser-plasma interaction. For the setup presented here, the minimal accessible free electron density is 5 × 10(18) cm(-3), the maximal one is 2 × 10(20) cm(-3). Furthermore, it provides a resolution of the electron density in space of 50 μm and in time of 0.5 ns for one image with a customizable magnification in space for each of the 4 images. The electron density was evaluated from the interferograms using an Abel inversion algorithm. The functionality of the system was proven during first experiments and the experimental results are presented and discussed. A ray tracing procedure was realized to verify the interferometry pictures taken. In particular, the experimental results are compared to simulations and show excellent agreement, providing a conclusive picture of the evolution of the electron density distribution.
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Affiliation(s)
- M Börner
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstrasse 9, 64289 Darmstadt, Germany
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12
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Hessling T, Blažević A, Frank A, Kraus D, Roth M, Schaumann G, Schumacher D, Stöhlker T, Hoffmann DHH. Time- and spectrally resolved measurements of laser-driven hohlraum radiation. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 84:016412. [PMID: 21867327 DOI: 10.1103/physreve.84.016412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Indexed: 05/31/2023]
Abstract
At the GSI Helmholtz center for heavy-ion research combined experiments with heavy ions and laser-produced plasmas are investigated. As a preparation to utilize indirectly heated targets, where a converter hohlraum provides thermal radiation to create a more homogeneous plasma, this converter target has to be characterized. In this paper the latest results of these measurements are presented. Small spherical cavities with diameters between 600 and 750 μm were heated with laser energies up to 30 J at 532-nm wavelength. Radiation temperatures could be determined by time-resolved as well as time-integrated diagnostics, and maximum values of up to 35 eV were achieved.
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Affiliation(s)
- T Hessling
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
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13
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Pelka A, Gregori G, Gericke DO, Vorberger J, Glenzer SH, Günther MM, Harres K, Heathcote R, Kritcher AL, Kugland NL, Li B, Makita M, Mithen J, Neely D, Niemann C, Otten A, Riley D, Schaumann G, Schollmeier M, Tauschwitz A, Roth M. Ultrafast melting of carbon induced by intense proton beams. Phys Rev Lett 2010; 105:265701. [PMID: 21231678 DOI: 10.1103/physrevlett.105.265701] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 10/05/2010] [Indexed: 05/30/2023]
Abstract
Laser-produced proton beams have been used to achieve ultrafast volumetric heating of carbon samples at solid density. The isochoric melting of carbon was probed by a scattering of x rays from a secondary laser-produced plasma. From the scattering signal, we have deduced the fraction of the material that was melted by the inhomogeneous heating. The results are compared to different theoretical approaches for the equation of state which suggests modifications from standard models.
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Affiliation(s)
- A Pelka
- Technische Universität Darmstadt, IKP, Darmstadt, Germany
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14
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Frank A, Blazević A, Grande PL, Harres K, Hessling T, Hoffmann DHH, Knobloch-Maas R, Kuznetsov PG, Nürnberg F, Pelka A, Schaumann G, Schiwietz G, Schökel A, Schollmeier M, Schumacher D, Schütrumpf J, Vatulin VV, Vinokurov OA, Roth M. Energy loss of argon in a laser-generated carbon plasma. Phys Rev E Stat Nonlin Soft Matter Phys 2010; 81:026401. [PMID: 20365659 DOI: 10.1103/physreve.81.026401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Revised: 11/04/2009] [Indexed: 05/29/2023]
Abstract
The experimental data presented in this paper address the energy loss determination for argon at 4 MeV/u projectile energy in laser-generated carbon plasma covering a huge parameter range in density and temperature. Furthermore, a consistent theoretical description of the projectile charge state evolution via a Monte Carlo code is combined with an improved version of the CasP code that allows us to calculate the contributions to the stopping power of bound and free electrons for each projectile charge state. This approach gets rid of any effective charge description of the stopping power. Comparison of experimental data and theoretical results allows us to judge the influence of different plasma parameters.
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Affiliation(s)
- A Frank
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstrasse 9, 64289 Darmstadt, Germany
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15
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Jaeger F, Grohmann E, Schaumann G. Microbial and swelling effects on pore size distribution in humous soil samples. Magn Reson Imaging 2007. [DOI: 10.1016/j.mri.2007.01.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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