Study of the spatial growth of stimulated Brillouin scattering in a gas-filled hohlraum via detecting the driven ion acoustic wave

Chen Chaoxin; Gong Tao; Li Zhichao; Hao Liang; Liu Yonggang; Liu Xiangming; Zhao Hang; Liu Yaoyuan; Pan Kaiqiang; Li Qi; Li Sanwei; Li Zhijun; Jin Sai; Wang Feng; Yang Dong

doi:10.1063/5.0173023

Volume 9 Issue 2

Mar. 2024

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Article Navigation > Matter and Radiation at Extremes > 2024 > 9(2): 027601

Chen Chaoxin, Gong Tao, Li Zhichao, Hao Liang, Liu Yonggang, Liu Xiangming, Zhao Hang, Liu Yaoyuan, Pan Kaiqiang, Li Qi, Li Sanwei, Li Zhijun, Jin Sai, Wang Feng, Yang Dong. Study of the spatial growth of stimulated Brillouin scattering in a gas-filled hohlraum via detecting the driven ion acoustic wave[J]. Matter and Radiation at Extremes, 2024, 9(2): 027601. doi: 10.1063/5.0173023

Citation:

Chen Chaoxin, Gong Tao, Li Zhichao, Hao Liang, Liu Yonggang, Liu Xiangming, Zhao Hang, Liu Yaoyuan, Pan Kaiqiang, Li Qi, Li Sanwei, Li Zhijun, Jin Sai, Wang Feng, Yang Dong. Study of the spatial growth of stimulated Brillouin scattering in a gas-filled hohlraum via detecting the driven ion acoustic wave[J]. Matter and Radiation at Extremes, 2024, 9(2): 027601. doi: 10.1063/5.0173023

Citation:

Chen Chaoxin, Gong Tao, Li Zhichao, Hao Liang, Liu Yonggang, Liu Xiangming, Zhao Hang, Liu Yaoyuan, Pan Kaiqiang, Li Qi, Li Sanwei, Li Zhijun, Jin Sai, Wang Feng, Yang Dong. Study of the spatial growth of stimulated Brillouin scattering in a gas-filled hohlraum via detecting the driven ion acoustic wave[J]. Matter and Radiation at Extremes, 2024, 9(2): 027601. doi: 10.1063/5.0173023

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Study of the spatial growth of stimulated Brillouin scattering in a gas-filled hohlraum via detecting the driven ion acoustic wave

doi: 10.1063/5.0173023

Chen Chaoxin^1
,,
Gong Tao^{1
,
,
,},
Li Zhichao^1
,,
Hao Liang^2
,,
Liu Yonggang¹,
Liu Xiangming¹,
Zhao Hang^1
,,
Liu Yaoyuan^1
,,
Pan Kaiqiang¹,
Li Qi¹,
Li Sanwei¹,
Li Zhijun¹,
Jin Sai^1
,,
Wang Feng^{1
,
,},
Yang Dong^1
,

1.
Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang, Sichuan 621900, People’s Republic of China
2.
Institute of Applied Physics and Computational Mathematics, Beijing 100094, People’s Republic of China

More Information

Corresponding author: a)Author to whom correspondence should be addressed: gongtao_lfrc@163.com
Received Date: 2023-08-19
Accepted Date: 2023-11-30

Available Online: 2024-03-01

Publish Date: 2024-03-01

Abstract

Abstract

In an experiment performed on the Shenguang-III prototype laser facility, collective Thomson scattering (TS) is used to study the spatial growth of stimulated Brillouin scattering (SBS) in a gas-filled hohlraum by detecting the SBS-driven ion acoustic wave. High-quality time-resolved SBS and TS spectra are obtained simultaneously in the experiment, and these are analyzed by a steady-state code based on the ray-tracing model. The analysis indicates that ion–ion collisions may play an important role in suppressing SBS growth in the Au plasma; as a result, the SBS excited in the filled gas region is dominant. In the early phase of the laser pulse, SBS originates primarily from the high-density plasma at the edges of the interaction beam channel, which is piled up by the heating of the interaction beam. Throughout the duration of the laser pulse, the presence of the TS probe beam might mitigate SBS by perturbing the density distribution around the region overlapping with the interaction beam.

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References(36)

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