Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum

Wu Fuyuan; Chu Yanyun; Ramis Rafael; Li Zhenghong; Ma Yanyun; Yang Jianlun; Wang Zhen; Ye Fan; Huang Zhanchang; Qi Jianmin; Zhou Lin; Liang Chuan; Chen Shijia; Ge Zheyi; Yang Xiaohu; Wang Shangwu

doi:10.1016/j.mre.2018.06.001

Volume 3 Issue 5

Sep. 2018

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Article Navigation > Matter and Radiation at Extremes > 2018 > 3(5):

Wu Fuyuan, Chu Yanyun, Ramis Rafael, Li Zhenghong, Ma Yanyun, Yang Jianlun, Wang Zhen, Ye Fan, Huang Zhanchang, Qi Jianmin, Zhou Lin, Liang Chuan, Chen Shijia, Ge Zheyi, Yang Xiaohu, Wang Shangwu. Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum[J]. Matter and Radiation at Extremes, 2018, 3(5). doi: 10.1016/j.mre.2018.06.001

Citation:

Wu Fuyuan, Chu Yanyun, Ramis Rafael, Li Zhenghong, Ma Yanyun, Yang Jianlun, Wang Zhen, Ye Fan, Huang Zhanchang, Qi Jianmin, Zhou Lin, Liang Chuan, Chen Shijia, Ge Zheyi, Yang Xiaohu, Wang Shangwu. Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum[J]. Matter and Radiation at Extremes, 2018, 3(5). doi: 10.1016/j.mre.2018.06.001

Citation:

Wu Fuyuan, Chu Yanyun, Ramis Rafael, Li Zhenghong, Ma Yanyun, Yang Jianlun, Wang Zhen, Ye Fan, Huang Zhanchang, Qi Jianmin, Zhou Lin, Liang Chuan, Chen Shijia, Ge Zheyi, Yang Xiaohu, Wang Shangwu. Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum[J]. Matter and Radiation at Extremes, 2018, 3(5). doi: 10.1016/j.mre.2018.06.001

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Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum

doi: 10.1016/j.mre.2018.06.001

1.
aCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha, 410073, China
2.
bInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, China
3.
cE.T.S.I. Aeronáuticos y del Espacio, Universidad Politécnica de Madrid, Madrid, 28040, Spain
4.
dIFSA Collaborative Innovation Center, Shanghai Jiao Tong Univeristy, Shanghai, 200240, China

More Information

Corresponding author: *Corresponding author.; **Corresponding author. E-mail addresses: lee_march@sina.com (Z. Li), yanyunma@126.com (Y. Ma).
Received Date: 2017-10-11
Accepted Date: 2018-06-15

Available Online: 2021-12-07

Publish Date: 2018-09-15

Abstract

Abstract

Radiation uniformity is important for Z-pinch dynamic hohlraum driven fusion. In order to understand the radiation uniformity of Z-pinch dynamic hohlraum, the code MULTI-2D with a new developed magnetic field package is employed to investigate the related physical processes on Julong-I facility with drive current about 7–8 MA. Numerical simulations suggest that Z-pinch dynamic hohlraum with radiation temperature more than 100 eV can be created on Julong-I facility. Although some X-rays can escape out of the hohlraum from Z-pinch plasma and electrodes, the radiation field near the foam center is quite uniform after a transition time. For the load parameters used in this paper, the transition time for the thermal wave transports from r = 1 mm to r = 0 mm is about 2.0 ns. Implosion of a testing pellet driven by cylindrical dynamic hohlraum shows that symmetrical implosion is hard to achieve due to the relatively slow propagation speed of thermal wave and the compression of cylindrical shock in the foam. With the help of quasi-spherical implosion, the hohlraum radiation uniformity and corresponding pellet implosion symmetry can be significantly improved thanks to the shape modulation of thermal wave front and shock wave front.
- Z-pinch,
- Dynamic hohlraum,
- Radiation uniformity,
- Shock wave,
- Thermal wave

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References(33)

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