We report on the characterization of the conditions of an imploding cylindrical plasma by time-resolved x-ray emission spectroscopy. Knowledge about this implosion platform can be applied to studies of particle transport for inertial confinement fusion schemes or to astrophysical plasmas. A cylindrical Cl-doped CH foam within a tube of solid CH was irradiated by 36 beams (Itotal ∼ 5 × 1014 W/cm2, 1.5 ns square pulse, and Etotal ∼ 16.2 kJ) of the OMEGA-60 laser to radially compress the CH toward the axis. The analysis of the time-resolved spectra showed that the compression can be described by four distinct phases, each presenting different plasma conditions. First the ablation of the cylinder is dominant; second, the foam is heated and induces a significant jump in emission intensities; third, the temperature and density of the foam reaches a maximum; and finally, the plasma expands. Ranges for the plasma temperature were inferred with the atomic physics code SCRAM (Spectroscopic Collisional-Radiative Atomic Model) and the experimental data have been compared to hydrodynamic simulations performed with the 2D code FLASH, which showed a similar implosion dynamic over time.
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February 2020
Research Article|
February 04 2020
Characterization of an imploding cylindrical plasma for electron transport studies using x-ray emission spectroscopy
M. Dozières
;
M. Dozières
a)
1
Center for Energy Research, University of California
, San Diego, La Jolla, California 92093-0417, USA
a)Author to whom correspondence should be addressed: mdozieres@ucsd.edu
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S. Hansen;
S. Hansen
2
Sandia National Laboratories
, Albuquerque, New Mexico 87185, USA
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P. Forestier-Colleoni;
P. Forestier-Colleoni
1
Center for Energy Research, University of California
, San Diego, La Jolla, California 92093-0417, USA
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C. McGuffey
;
C. McGuffey
1
Center for Energy Research, University of California
, San Diego, La Jolla, California 92093-0417, USA
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D. Kawahito;
D. Kawahito
1
Center for Energy Research, University of California
, San Diego, La Jolla, California 92093-0417, USA
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M. Bailly-Grandvaux;
M. Bailly-Grandvaux
1
Center for Energy Research, University of California
, San Diego, La Jolla, California 92093-0417, USA
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K. Bhutwala;
K. Bhutwala
1
Center for Energy Research, University of California
, San Diego, La Jolla, California 92093-0417, USA
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C. M. Krauland;
C. M. Krauland
3
General Atomics
, San Diego, California 92186, USA
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M. S. Wei
;
M. S. Wei
4
Extreme State Physics Laboratory, Physics and Astronomy Department, University of Rochester
, Rochester, New York 14627, USA
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P. Gourdain
;
P. Gourdain
4
Extreme State Physics Laboratory, Physics and Astronomy Department, University of Rochester
, Rochester, New York 14627, USA
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J. R. Davies
;
J. R. Davies
5
Laboratory for Laser Energetics, University of Rochester
, Rochester, New York 14623, USA
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K. Matsuo
;
K. Matsuo
6
Institute of Laser Engineering, Osaka University
, Suita, Osaka 565-0871, Japan
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S. Fujioka
;
S. Fujioka
6
Institute of Laser Engineering, Osaka University
, Suita, Osaka 565-0871, Japan
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E. M. Campbell
;
E. M. Campbell
5
Laboratory for Laser Energetics, University of Rochester
, Rochester, New York 14623, USA
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J. L. Peebles
;
J. L. Peebles
5
Laboratory for Laser Energetics, University of Rochester
, Rochester, New York 14623, USA
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J. J. Santos
;
J. J. Santos
7
Université de Bordeaux-CNRS-CEA, CELIA UMR 5107
, F-33400 Talence, France
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D. Batani;
D. Batani
7
Université de Bordeaux-CNRS-CEA, CELIA UMR 5107
, F-33400 Talence, France
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S. Zhang
;
S. Zhang
1
Center for Energy Research, University of California
, San Diego, La Jolla, California 92093-0417, USA
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F. N. Beg
F. N. Beg
1
Center for Energy Research, University of California
, San Diego, La Jolla, California 92093-0417, USA
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a)Author to whom correspondence should be addressed: mdozieres@ucsd.edu
Phys. Plasmas 27, 023302 (2020)
Article history
Received:
August 22 2019
Accepted:
January 07 2020
Citation
M. Dozières, S. Hansen, P. Forestier-Colleoni, C. McGuffey, D. Kawahito, M. Bailly-Grandvaux, K. Bhutwala, C. M. Krauland, M. S. Wei, P. Gourdain, J. R. Davies, K. Matsuo, S. Fujioka, E. M. Campbell, J. L. Peebles, J. J. Santos, D. Batani, S. Zhang, F. N. Beg; Characterization of an imploding cylindrical plasma for electron transport studies using x-ray emission spectroscopy. Phys. Plasmas 1 February 2020; 27 (2): 023302. https://doi.org/10.1063/1.5125271
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