Studies on the motion and radiation of interior plasmas in gas-filled hohlraums with different laser entrance hole sizes

Liang GUO; Xin LI; Qi LI; Sanwei LI; Xin HU; Jin LI; Bo DENG; Keli DENG; Qiangqiang WANG; Zhurong CAO; Lifei HOU; Xingsen CHE; Huabing DU; Tao XU; Xiaoan HE; Zhichao LI; Xiaohua JIANG; Wei JIANG; Chunyang ZHENG; Wudi ZHENG; Peng SONG; Yongkun DING; Dong YANG; Jiamin YANG

doi:10.1088/2058-6272/ad3b9b

Plasma Science and Technology > 2024 > 26(7): 075201. > DOI: 10.1088/2058-6272/ad3b9b

Liang GUO, Xin LI, Qi LI, Sanwei LI, Xin HU, Jin LI, Bo DENG, Keli DENG, Qiangqiang WANG, Zhurong CAO, Lifei HOU, Xingsen CHE, Huabing DU, Tao XU, Xiaoan HE, Zhichao LI, Xiaohua JIANG, Wei JIANG, Chunyang ZHENG, Wudi ZHENG, Peng SONG, Yongkun DING, Dong YANG, Jiamin YANG. Studies on the motion and radiation of interior plasmas in gas-filled hohlraums with different laser entrance hole sizes[J]. Plasma Science and Technology, 2024, 26(7): 075201. DOI: 10.1088/2058-6272/ad3b9b

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Studies on the motion and radiation of interior plasmas in gas-filled hohlraums with different laser entrance hole sizes

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

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Author Bio:
Xin LI: li_xin@iapcm.ac.cn

Jiamin YANG: yjm70018@sina.cn
Corresponding author:
Xin LI, li_xin@iapcm.ac.cn

Jiamin YANG, yjm70018@sina.cn
Received Date: November 06, 2023
Revised Date: April 01, 2024
Accepted Date: April 06, 2024
Available Online: April 07, 2024
Published Date: June 04, 2024

Graphical Abstract

Abstract

Abstract

An experiment on 100 kJ laser facility is performed to study the motive features and radiation properties of plasmas from different areas inside gas-filled cylindrical hohlraums. These hohlraums are designed to possess one open end and one laser entrance hole (LEH) with different diameters, which would or not result in the blocking of the LEH. An x-ray streak camera that is set at 16 degrees with respect to the hohlraum axis is applied to acquire the time-resolved x-ray images from the open end. Based on the images, we can study the evolutions of the wall plasma, corona bubble plasma and LEH plasma simultaneously through an equivalent view field of hohlraum interior. Multi-group flat response x-ray detectors are applied to measure the x-ray fluxes. In order to understand these characteristics, our two-dimensional radiation hydrodynamic code is used to simulate the experimental results. For the accuracy of reproduction, dielectronic recombination and two parameter corrections are applied in our code. Based on the comparison between experiments and simulations, we quantitatively understand the blocking process of LEH and the motion effects of other plasmas. The calibrated code is beneficial to design the gas-filled hohlraum in a nearby parameter space, especially the limit size of LEH.
- gas-filled hohlraum,
- plasma expansion,
- LEH blocking

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Acknowledgments

This work was supported by National Natural Science Foundation of China (Nos. 12075219, 12105269 and 12175210). The authors give thanks to the operation group of BSRF and 100 kJ laser facility for their laborious work and close collaboration.

References (36)

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