Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum
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...
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doaj-cecdfc2b30a64a62aec4f8ed3f0d13ee2020-11-25T01:58:18ZengAIP Publishing LLCMatter and Radiation at Extremes2468-080X2018-09-013524825510.1016/j.mre.2018.06.001003805MRENumerical studies on the radiation uniformity of Z-pinch dynamic hohlraumFuyuan Wu0Yanyun Chu1Rafael Ramis2Zhenghong Li3Yanyun Ma4Jianlun Yang5Zhen Wang6Fan Ye7Zhanchang Huang8Jianmin Qi9Lin Zhou10Chuan Liang11Shijia Chen12Zheyi Ge13Xiaohu Yang14Shangwu Wang15College of Liberal Arts and Sciences, National University of Defense Technology, Changsha, 410073, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, ChinaE.T.S.I. Aeronáuticos y del Espacio, Universidad Politécnica de Madrid, Madrid, 28040, SpainInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, ChinaCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha, 410073, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, ChinaInstitute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, ChinaCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha, 410073, ChinaCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha, 410073, ChinaCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha, 410073, ChinaCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha, 410073, ChinaRadiation 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.http://dx.doi.org/10.1016/j.mre.2018.06.001 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Fuyuan Wu Yanyun Chu Rafael Ramis Zhenghong Li Yanyun Ma Jianlun Yang Zhen Wang Fan Ye Zhanchang Huang Jianmin Qi Lin Zhou Chuan Liang Shijia Chen Zheyi Ge Xiaohu Yang Shangwu Wang |
spellingShingle |
Fuyuan Wu Yanyun Chu Rafael Ramis Zhenghong Li Yanyun Ma Jianlun Yang Zhen Wang Fan Ye Zhanchang Huang Jianmin Qi Lin Zhou Chuan Liang Shijia Chen Zheyi Ge Xiaohu Yang Shangwu Wang Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum Matter and Radiation at Extremes |
author_facet |
Fuyuan Wu Yanyun Chu Rafael Ramis Zhenghong Li Yanyun Ma Jianlun Yang Zhen Wang Fan Ye Zhanchang Huang Jianmin Qi Lin Zhou Chuan Liang Shijia Chen Zheyi Ge Xiaohu Yang Shangwu Wang |
author_sort |
Fuyuan Wu |
title |
Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum |
title_short |
Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum |
title_full |
Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum |
title_fullStr |
Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum |
title_full_unstemmed |
Numerical studies on the radiation uniformity of Z-pinch dynamic hohlraum |
title_sort |
numerical studies on the radiation uniformity of z-pinch dynamic hohlraum |
publisher |
AIP Publishing LLC |
series |
Matter and Radiation at Extremes |
issn |
2468-080X |
publishDate |
2018-09-01 |
description |
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. |
url |
http://dx.doi.org/10.1016/j.mre.2018.06.001 |
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