Characterization of an imploding cylindrical plasma for electron transport studies using x-ray emission spectroscopy
| Autor: | E. M. Campbell, C. M. Krauland, J. J. Santos, Krish Bhutwala, Maylis Dozieres, Pierre Gourdain, P. Forestier-Colleoni, S. Zhang, Daiki Kawahito, Mingsheng Wei, Dimitri Batani, C. McGuffey, J. R. Davies, Mathieu Bailly-Grandvaux, Shinsuke Fujioka, Kazuki Matsuo, Stephanie Hansen, Jonathan Peebles, Farhat Beg |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Implosion Plasma Condensed Matter Physics Laser 7. Clean energy 01 natural sciences Spectral line 010305 fluids & plasmas law.invention Physics::Plasma Physics law 0103 physical sciences Atomic model Cylinder Emission spectrum Atomic physics 010306 general physics Inertial confinement fusion |
| Zdroj: | Physics of Plasmas |
| ISSN: | 1089-7674 1070-664X |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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