中国物理B ›› 2017, Vol. 26 ›› Issue (5): 55202-055202.doi: 10.1088/1674-1056/26/5/055202

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

Bow shocks formed by a high-speed laser-driven plasma cloud interacting with a cylinder obstacle

Yan-Fei Li(李彦霏), Yu-Tong Li(李玉同), Da-Wei Yuan(袁大伟), Fang Li(李芳), Bao-Jun Zhu(朱保君), Zhe Zhang(张喆), Jia-Yong Zhong(仲佳勇), Bo Han(韩波), Hui-Gang Wei(魏会冈), Xiao-Xing Pei(裴晓星), Jia-Rui Zhao(赵家瑞), Chang Liu(刘畅), Xiao-Xia Yuan(原晓霞), Guo-Qian Liao(廖国前), Yong-Joo Rhee, Xin Lu(鲁欣), Neng Hua(华能), Bao-Qiang Zhu(朱宝强), Jian-Qiang Zhu(朱健强), Zhi-Heng Fang(方智恒), Xiu-Guang Huang(黄秀光), Si-Zu Fu(傅思祖), Gang Zhao(赵刚), Jie Zhang(张杰)   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;
    3 Department of Astronomy, Beijing Normal University, Beijing 100875, China;
    4 Center for Relativistic Laser Science, Institute for Basic Science, Gwangju 61005, Korea;
    5 National Laboratory on High Power Lasers and Physics, Shanghai 201800, China;
    6 Shanghai Institute of Laser Plasma, Chinese Academy of Engineering Physics, Shanghai 201800, China;
    7 Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China;
    8 Collaborative Innovation Centre of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China;
    9 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2016-12-01 修回日期:2017-01-26 出版日期:2017-05-05 发布日期:2017-05-05
  • 通讯作者: Yu-Tong Li E-mail:ytli@iphy.ac.cn
  • 基金资助:

    Project supported by the National Basic Research Program of China (Grant No. 2013CBA01501), the National Natural Science Foundation of China (Grant Nos. 11135012, 11375262, 11503041, and 11520101003), and the Science Challenge Program of China (Grant No. JCKY2016212A505).

Bow shocks formed by a high-speed laser-driven plasma cloud interacting with a cylinder obstacle

Yan-Fei Li(李彦霏)1,9, Yu-Tong Li(李玉同)1,8,9, Da-Wei Yuan(袁大伟)2, Fang Li(李芳)1, Bao-Jun Zhu(朱保君)1,9, Zhe Zhang(张喆)1, Jia-Yong Zhong(仲佳勇)3,8, Bo Han(韩波)2,3, Hui-Gang Wei(魏会冈)2, Xiao-Xing Pei(裴晓星)2, Jia-Rui Zhao(赵家瑞)1, Chang Liu(刘畅)3, Xiao-Xia Yuan(原晓霞)3, Guo-Qian Liao(廖国前)1, Yong-Joo Rhee4, Xin Lu(鲁欣)1,9, Neng Hua(华能)5, Bao-Qiang Zhu(朱宝强)5, Jian-Qiang Zhu(朱健强)5,8, Zhi-Heng Fang(方智恒)6, Xiu-Guang Huang(黄秀光)6,8, Si-Zu Fu(傅思祖)6,8, Gang Zhao(赵刚)2,8, Jie Zhang(张杰)7,8   

  1. 1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China;
    3 Department of Astronomy, Beijing Normal University, Beijing 100875, China;
    4 Center for Relativistic Laser Science, Institute for Basic Science, Gwangju 61005, Korea;
    5 National Laboratory on High Power Lasers and Physics, Shanghai 201800, China;
    6 Shanghai Institute of Laser Plasma, Chinese Academy of Engineering Physics, Shanghai 201800, China;
    7 Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China;
    8 Collaborative Innovation Centre of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240, China;
    9 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-12-01 Revised:2017-01-26 Online:2017-05-05 Published:2017-05-05
  • Contact: Yu-Tong Li E-mail:ytli@iphy.ac.cn
  • Supported by:

    Project supported by the National Basic Research Program of China (Grant No. 2013CBA01501), the National Natural Science Foundation of China (Grant Nos. 11135012, 11375262, 11503041, and 11520101003), and the Science Challenge Program of China (Grant No. JCKY2016212A505).

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摘要：

A bow shock is formed in the interaction of a high-speed laser-driven plasma cloud with a cylinder obstacle. Its temporal and spatial structures are observed by shadowgraphy and interferometry. The width of the shock transition region is ～ 50 μm, comparable to the ion-ion collision mean free path, which indicates that collision is dominated in the shock probably. The Mach-number of the ablating plasma cloud is ～ 15 at first, and decreases with time resulting in a changing shock structure. A two-dimension hydrodynamics code, USim, is used to simulate the interaction process. The simulated shocks can well reproduce the observed.

关键词: laboratory astrophysics, bow shock, high Mach-number, high power lasers

Abstract:

A bow shock is formed in the interaction of a high-speed laser-driven plasma cloud with a cylinder obstacle. Its temporal and spatial structures are observed by shadowgraphy and interferometry. The width of the shock transition region is ～ 50 μm, comparable to the ion-ion collision mean free path, which indicates that collision is dominated in the shock probably. The Mach-number of the ablating plasma cloud is ～ 15 at first, and decreases with time resulting in a changing shock structure. A two-dimension hydrodynamics code, USim, is used to simulate the interaction process. The simulated shocks can well reproduce the observed.

Key words: laboratory astrophysics, bow shock, high Mach-number, high power lasers

中图分类号:  (Laboratory studies of space- and astrophysical-plasma processes)

  • 52.72.+v
52.35.Tc (Shock waves and discontinuities) 52.50.Jm (Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.)) 42.30.-d (Imaging and optical processing)