Theoretical investigations on x-ray transport in radiation transport experiments on the Shenguang-III prototype laser facility

Meng Guangwei; She Jun; Song Tianming; Yang Jiamin; Wang Min

doi:10.1063/5.0043745

Volume 7 Issue 2

Mar. 2022

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Meng Guangwei, She Jun, Song Tianming, Yang Jiamin, Wang Min. Theoretical investigations on x-ray transport in radiation transport experiments on the Shenguang-III prototype laser facility[J]. Matter and Radiation at Extremes, 2022, 7(2): 025901. doi: 10.1063/5.0043745

Citation:

Meng Guangwei, She Jun, Song Tianming, Yang Jiamin, Wang Min. Theoretical investigations on x-ray transport in radiation transport experiments on the Shenguang-III prototype laser facility[J]. Matter and Radiation at Extremes, 2022, 7(2): 025901. doi: 10.1063/5.0043745

Citation:

Meng Guangwei, She Jun, Song Tianming, Yang Jiamin, Wang Min. Theoretical investigations on x-ray transport in radiation transport experiments on the Shenguang-III prototype laser facility[J]. Matter and Radiation at Extremes, 2022, 7(2): 025901. doi: 10.1063/5.0043745

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Theoretical investigations on x-ray transport in radiation transport experiments on the Shenguang-III prototype laser facility

doi: 10.1063/5.0043745

Meng Guangwei^{1
,
,},
She Jun^{1
,
,},
Song Tianming²,
Yang Jiamin^2
,,
Wang Min¹

1.
Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100088, People’s Republic of China
2.
Research Center of Laser Fusion, Mianyang 621900, People’s Republic of China

More Information

Corresponding author: a)Authors to whom correspondence should be addressed: meng_guangwei@iapcm.ac.cn and she_jun@iapcm.ac.cn; a)Authors to whom correspondence should be addressed: meng_guangwei@iapcm.ac.cn and she_jun@iapcm.ac.cn
Received Date: 2021-01-11
Accepted Date: 2021-12-20

Available Online: 2022-03-01

Publish Date: 2022-03-01

Abstract

Abstract

Experiments exploring the propagation of heat waves within cylindrical CH foams were performed on the Shenguang-III prototype laser facility in 2012. In this paper, the radiation fluxes out of CH foam cylinders at different angles are analyzed theoretically using the two-dimensional radiation hydrodynamics code LARED-R. Owing to the difficulty in validating opacity and equation of state (EOS) data for high-Z plasmas, and to uncertainties in the measured radiation temperature T_r and the original foam density ρ₀, multipliers are introduced to adjust the Au material parameters, T_r, and ρ₀ in our simulations to better explain the measurements. The dependences of the peak radiation flux F_max and the breakout time of the heat wave t_half (defined as the time corresponding to the radiation flux at half-maximum) on the radiation source, opacity, EOS, and ρ₀ scaling factors (η_src, η_op, η_eos, and η_ρ) are investigated via numerical simulations combined with fitting. Then, with the uncertainties in the measured T_r and ρ₀ fixed at 3.6% and 3.1%, respectively, experimental data are exploited as fiducial values to determine the ranges of η_op and η_eos. It is found that the ranges of η_op and η_eos fixed by this experiment overlap partially with those found in our previous work [Meng et al., Phys. Plasmas 20 , 092704 (2013)]. Based on the scaled opacity and EOS parameters, the values of F_max and t_half obtained via simulations are in good agreement with the measurements, with maximum errors ∼9.5% and within 100 ps, respectively.

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References(29)

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