Filamentation instability in two counter-streaming laser plasmas
Hui Liu(刘慧)1, Quan-Li Dong(董全力)1,7, Da-Wei Yuan(袁大伟)2,3, Xun Liu(刘勋)2, Neng Hua(华能)4, Zhan-Feng Qiao(乔战峰)4, Bao-Qiang Zhu(朱宝强)4, Jian-Qiang Zhu(朱健强)4, Bo-Bin Jiang(蒋柏彬)5, Kai Du(杜凯)5, Yong-Jian Tang(唐永健)5, Gang Zhao(赵刚)3, Xiao-Hui Yuan(远晓辉)6,7, Zheng-Ming Sheng(盛政明)6,7,8, Jie Zhang(张杰)6,7
1. School of Physics and Optoelectronic Engineerings, Ludong University, Yantai 264025, China;
2. Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
3. National Astronomical Observatories of China, Chinese Academy of Sciences, Beijing 100012, China;
4. National Laboratory on High Power Lasers and Physics, Shanghai 201800, China;
5. Research Center of Laser Fusion, Chinese Academy of Engineering Physics, Mianyang 621900, China;
6. Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China;
7. Innovative Collaboration Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240, China;
8. SUPA, Physics Department, University of Strathclyde, Glasgow G4 0NG, UK
The filamentation instability was observed in the interaction of two counter-streaming laser ablated plasma flows, which were supersonic, collisionless, and also closely relevant to astrophysical conditions. The plasma flows were created by irradiating a pair of oppositely standing plastic (CH) foils with 1ns-pulsed laser beams of total energy of 1.7 kJ in two laser spots. With characteristics diagnosed in experiments, the calculated features of Weibel-type filaments are in good agreement with measurements.
Project supported by the National Natural Science Foundation of China (Grant Nos. 11074297, 11674146, and 11220101002) and the National Basic Research Program of China (Grant No. 2013CBA01500.
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