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

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, w...

Full description

Saved in:
Bibliographic Details
Published inChinese physics B Vol. 26; no. 5; pp. 279 - 283
Main Author 李彦霏 李玉同 袁大伟 李芳 朱保君 张喆 仲佳勇 韩波 魏会冈 裴晓星 赵家瑞 刘畅 原晓霞 廖国前 Yong-Joo Rhee 鲁欣 华能 朱宝强 朱健强 方智恒 黄秀光 傅思祖 赵刚 张杰
Format Journal Article
LanguageEnglish
Published 01.05.2017
Subjects
二维流体力学
圆柱
弓形
激光驱动
激波
相互作用
等离子体云
障碍物
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/26/5/055202

Cover

More Information
Summary: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.
Bibliography: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.
Yan-Fei Li1,9, Yu-Tong Li1,8,9, Da-Wei Yuan2, Fang Li1, Bao-Jun Zhu1,9, Zhe Zhang1, Jia-Yong Zhong3,8, Bo Han2,3, Hui-Gang Wei2, Xiao-Xing Pei2, Jia-Rui Zhao1, Chang Liu3, Xiao-Xia Yuan3, Guo-Qian Liao1, Yong-Joo Rhee4, Xin Lu1,9, Neng Hua5, Bao-Qiang Zhu5, Jian-Qiang Zhu5,8, Zhi-Heng Fang6, Xiu-Guang Huang6,8, Si-Zu Fu6,8, Gang Zhao2,8, Jie Zhang7,8（1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China ; 2National 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 ; 5National Laboratory on High Power Lasers and Physics, Shanghai 201800, China ; 6 Shanghai Institute of Laser Plasma, Chinese Academy of Engineering Physics, Shanghai 201800, China; 7Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China ;8 Collaborative Innovation Centre of IFSA （CICIFSA）, Shanghai Jiao Tong University, Shanghai 200240, China ; 9School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China）
cylinder interacting cloud obstacle collision interferometry hydrodynamics dominated upstream supersonic
11-5639/O4
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/26/5/055202