Open AccessVariations of implosion asymmetry with hohlraum length and time in indirect-drive inertial confinement fusion
Author(s) -
Hang Li,
Yudong Pu,
Longfei Jing,
Lin Zhang,
Bolun Chen,
Wei Jiang,
Zhou Jin-yu,
Tianxuan Huang,
Haiying Zhang,
Rong Yu,
Jiyan Zhang,
Miao Wen-Yong,
Zheng Zhi-Jian,
Zhurong Cao,
Jiamin Yang,
Shenye Liu,
Jiang Shao-En,
Yongkun Ding,
Longyu Kuang,
Guang-yue Hu,
Jian Zheng
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.225204
Subject(s) - hohlraum , implosion , inertial confinement fusion , physics , optics , asymmetry , laser , radius , radiation flux , radiation , atomic physics , plasma , nuclear physics , quantum mechanics , computer security , computer science
In order to achieve the high density compression in laser indirect-drive inertial confinement fusion, the implosion symmetry and hohlraum radiation uniformity are strictly required. To study the variations of implosion asymmetry with hohlraum length and time, three kinds of hohlraum lengths are adopted in experiment. X-ray emission from capsule fuel is measured by an X-ray framing camera. Based on measured capsule compression process and ellipticity variation, it is preliminarily judged that the medium hohlraum of 1700 μm long is the closest to implosion symmetry demand of Shenguang Ⅲ prototype laser facility. Time-resolved implosion asymmetry is derived from a simplified analytic model, in which used is the time-resolved hohlraum radiation nonuniformity derived from a view-factor code. The derived results of the time-resolved implosion asymmetry are basically in agreement with experimental results. The physical mechanism for how hohlraum radiation nonuniformity evolution induces the variations of implosion asymmetry with hohlraum length and time is analyzed.