Characteristic and impact of kinetic effects at interfaces of inertial confinement fusion hohlraums

Cai Hongbo; Zhang Wenshuai; Du Bao; Yan Xinxin; Shan Lianqiang; Hao Liang; Li Zhichao; Zhang Feng; Gong Tao; Yang Dong; Zou Shiyang; Zhu Shaoping; He Xiantu

doi:10.11884/HPLPB202032.200134

Volume 32 Issue 9

Aug. 2020

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Cai Hongbo, Zhang Wenshuai, Du Bao, et al. Characteristic and impact of kinetic effects at interfaces of inertial confinement fusion hohlraums[J]. High Power Laser and Particle Beams, 2020, 32: 092007. doi: 10.11884/HPLPB202032.200134

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Cai Hongbo, Zhang Wenshuai, Du Bao, et al. Characteristic and impact of kinetic effects at interfaces of inertial confinement fusion hohlraums[J]. High Power Laser and Particle Beams, 2020, 32: 092007. doi: 10.11884/HPLPB202032.200134

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Characteristic and impact of kinetic effects at interfaces of inertial confinement fusion hohlraums

doi: 10.11884/HPLPB202032.200134

1.
Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
2.
HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100871, China
3.
Laser Fusion Research Center, CAEP, Mianyang 621900, China
4.
Graduate School, China Academy of Engineering Physics, Beijing 100088, China

Received Date: 2020-05-18
Rev Recd Date: 2020-07-20
Publish Date: 2020-08-15

Abstract

Abstract

In the study of inertial confinement fusion physics, the characteristics, temporal and spatial evolution of kinetic effects at the plasma interfaces attract crucial interest recently because they can affect the laser energy deposition, laser plasma instabilities, radiation asymmetry and implosion performance. A successful design of inertial confinement fusion requires the accurate description of the temporal and spatial evolution of the kinetic effects at the plasma interfaces, which is also a very challenging and unresolved problem in high energy density physics. In this paper, we will review our recent researches on the kinetic effects and their influence on laser plasma instabilities and implosion performance: (1) Electrostatic field arisen in the hohlraum wall/ablator (or the low-density fill-gas) interpenetration region will result in efficient acceleration of high energy ions, which is a source of the low-mode asymmetry of the implosion capsule. (2) The mechanism for the electrostatic field generation and the anomalous mix in the interpenetration layer at the high-Z and low-Z plasma interface and its effects on the laser plasma instabilities. (3) Reconstruction of the spontaneous electric and magnetic fields through proton radiography.

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