Influence of Capsule Offset on Radiation Asymmetry in Shenguang-II Laser Facility

JING Longfei (景龙飞); LI Hang (黎航); LIN Zhiwei (林雉伟); LI Liling (李丽灵); KUANG Longyu (况龙钰); HUANG Yunbao (黄运保); ZHANG Lu (张璐); HUANG Tianxuan (黄天晅); JIANG Shao’en (江少恩); DING Yongkun (丁永坤)

doi:10.1088/1009-0630/17/10/06

Plasma Science and Technology > 2015 > 17(10): 842-846. > DOI: 10.1088/1009-0630/17/10/06

JING Longfei (景龙飞), LI Hang (黎航), LIN Zhiwei (林雉伟), LI Liling (李丽灵), KUANG Longyu (况龙钰), HUANG Yunbao (黄运保), ZHANG Lu (张璐), HUANG Tianxuan (黄天晅), JIANG Shao’en (江少恩), DING Yongkun (丁永坤). Influence of Capsule Offset on Radiation Asymmetry in Shenguang-II Laser Facility[J]. Plasma Science and Technology, 2015, 17(10): 842-846. DOI: 10.1088/1009-0630/17/10/06

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Influence of Capsule Offset on Radiation Asymmetry in Shenguang-II Laser Facility

1Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China 2Mechatronics School of Guangdong University of Technology, Guangzhou 510080, China 3Center for Applied Physics and Technology, Peking University, Beijing 100871, China

Funds: Supported by Science and Technology on Plasma Physics Laboratory of China (Nos. 9140C680104140C68287, 9140C680104130C68241), and in part by National Natural Science Foundation of China (Nos. 11475154, 51375185, U1430124,11435011, 11305160)

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Received Date: October 29, 2014

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Abstract

Abstract

The re-emitted images of the frame camera indicated that the high-Z (Bi) capsule deviated about 29 μm from the center of the hohlraum in experiments at the Shenguang-II (SG-II) laser facility; however, investigations on this issue have seldom been performed. The influence of three dimensional o?sets of a capsule on its radiation asymmetry in inertial confinement fusion (ICF) will be analyzed in this paper. Simulations demonstrate that the axial o?set of 100 μm of a capsule from the center of the hohlraum brings an additional 3.5% radiation drive asymmetry and 6.5% P1 asymmetry (Legendre odd model) on the capsule in the SG-II laser facility, and the o?set must be within 25 μm if the P1 asymmetry is restricted to below 2%.
- laser inertial confinement fusion,
- radiation drive asymmetry,
- view-factor code

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References

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