Filamentation instability in two counter-streaming laser plasmas  

作　　者：刘慧 董全力 袁大伟 刘勋 华能 乔战峰 朱宝强 朱健强 蒋柏彬 杜凯 唐永健 赵刚 远晓辉 盛政明 张杰 

机构地区：[1]School of Physics and Optoelectronic Engineerings,Ludong University [2]Innovative Collaboration Center of IFSA,Shanghai Jiao Tong University [3]Beijing National Laboratory of Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences [4]National Astronomical Observatories of China,Chinese Academy of Sciences [5]National Laboratory on High Power Lasers and Physics [6]Research Center of Laser Fusion,Chinese Academy of Engineering Physics [7]Department of Physics,Shanghai Jiao Tong University [8]SUPA,Physics Department,University of Strathclyde

出　　处：《Chinese Physics B》2016年第12期138-143,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11074297,11674146,and 11220101002);the National Basic Research Program of China(Grant No.2013CBA01500

摘　　要：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 Ins-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.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 Ins-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.

关 键 词：Weibel instability FILAMENTATION laser plasma 

分 类 号：O53[理学—等离子体物理]