中国物理B ›› 2019, Vol. 28 ›› Issue (3): 35203-035203.doi: 10.1088/1674-1056/28/3/035203

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Influence analysis of symmetry on capsule in six-cylinder-port hohlraum

You Zou(邹游), Wudi Zheng(郑无敌), Xin Li(李欣)   

  1. 1 School of Science, Chongqing University of Technology, Chongqing 400054, China;
    2 Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
  • 收稿日期:2018-11-30 修回日期:2019-01-14 出版日期:2019-03-05 发布日期:2019-03-05
  • 通讯作者: Wudi Zheng E-mail:zheng_wudi@iapcm.ac.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 11705010) and China Postdoctoral Science Foundation (Grant No. 2017M610821).

Influence analysis of symmetry on capsule in six-cylinder-port hohlraum

You Zou(邹游)1,2, Wudi Zheng(郑无敌)2, Xin Li(李欣)2   

  1. 1 School of Science, Chongqing University of Technology, Chongqing 400054, China;
    2 Institute of Applied Physics and Computational Mathematics, Beijing 100094, China
  • Received:2018-11-30 Revised:2019-01-14 Online:2019-03-05 Published:2019-03-05
  • Contact: Wudi Zheng E-mail:zheng_wudi@iapcm.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 11705010) and China Postdoctoral Science Foundation (Grant No. 2017M610821).

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摘要：

We have investigated the flux symmetry on the capsule in a six-cylinder-port hohlraum for improving the design of the hohlraum. The influence factors of drive symmetry on the capsule in the hohlraum are studied, including laser power, laser beams arrangement, hohlraum geometric parameters, plasma condition, capsule convergence, etc. The x-ray radiation flux distribution on the capsule is obtained based on the three-dimensional view factor model. In the six-cylinder-port hohlraum, the main drive asymmetry is the C40 mode asymmetry. When the C40 mode asymmetry approaches zero, the drive symmetry on the capsule is optimal. Our results demonstrate that in order to have a high flux symmetry on the capsule in the laser main-pulse stage, more negative initial C40 modes are needed, which can be realized by adjusting the hohlraum geometry parameters. The hohlraum with column length LH=4.81 mm has an optimal symmetry in the laser main-pulse stage.

关键词: inertial confinement fusion (ICF), six-cylinder-port hohlraum, flux symmetry, three-dimensional view factor model

Abstract:

We have investigated the flux symmetry on the capsule in a six-cylinder-port hohlraum for improving the design of the hohlraum. The influence factors of drive symmetry on the capsule in the hohlraum are studied, including laser power, laser beams arrangement, hohlraum geometric parameters, plasma condition, capsule convergence, etc. The x-ray radiation flux distribution on the capsule is obtained based on the three-dimensional view factor model. In the six-cylinder-port hohlraum, the main drive asymmetry is the C40 mode asymmetry. When the C40 mode asymmetry approaches zero, the drive symmetry on the capsule is optimal. Our results demonstrate that in order to have a high flux symmetry on the capsule in the laser main-pulse stage, more negative initial C40 modes are needed, which can be realized by adjusting the hohlraum geometry parameters. The hohlraum with column length LH=4.81 mm has an optimal symmetry in the laser main-pulse stage.

Key words: inertial confinement fusion (ICF), six-cylinder-port hohlraum, flux symmetry, three-dimensional view factor model

中图分类号:  (Laser inertial confinement)

  • 52.57.-z
52.57.Bc (Target design and fabrication) 52.38.Dx (Laser light absorption in plasmas (collisional, parametric, etc.))