Simulations of hot electron transport in radiation-ablated plasma
Bin Zhao(赵斌)1,2,†, Tao Tao(陶弢)2, Rui Yan(闫锐)2,3, and Jian Zheng(郑坚)2,4
1. Department of Mathematics and Physics, Nanjing Institute of Technology, Nanjing 211167, China; 2. IFSA Collaborative Innovation Center, Shanghai Jiao Tong University, Shanghai 200240, China; 3. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China; 4. School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China
Abstract The transport of hot electrons in inertial confinement fusion (ICF) is integrated issue due to the coupling of hydrodynamic evolution and many physical processes. A hot electron transport code is developed and coupled with the radiation hydrodynamic code MULTI1D in this study. Using the code, the slowing-down process and ablation process of the hot electron beam are simulated. The ablation pressure scaling law of hot electron beam is confirmed in our simulations. The hot electron transport is simulated in the radiation-ablated plasmas relevant to indirect-drive ICF, where the spatial profile of hot electron energy deposition is presented around the shock compressed region. It is shown that the hot electron can prominently increase the total ablation pressure in the early phase of radiation-ablated plasma. So, our study suggests that a potential-driven symmetric mechanism may occur under the irradiation of asymmetric hot electron beam. The possible degradation from the hot electron transport and preheating is also discussed.
Fund: Project supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No.XDA25050600) and the DCI joint team.
Corresponding Authors:
Bin Zhao
E-mail: zhaobin@mail.ustc.edu.cn
Cite this article:
Bin Zhao(赵斌), Tao Tao(陶弢), Rui Yan(闫锐), and Jian Zheng(郑坚) Simulations of hot electron transport in radiation-ablated plasma 2023 Chin. Phys. B 32 085201
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