Filaments in high-speed counter-streaming plasma interactions driven by high-power laser pulses  

作　　者：YUAN DaWei LI YuTong SU LuNing LIAO GuoQian YIN ChuanLei ZHU BaoJun ZHANG Jie 

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences

出　　处：《Science China(Physics,Mechanics & Astronomy)》2013年第12期2381-2385,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11135012,10925421,11375262 and 11220101002);the National Basic Research Program of China(Grant No.2013CBA01501)

摘　　要：Interactions of two counter-streaming plasmas driven by high power laser pulses are studied on Shenguang II laser facility.Filamentary structures were observed in the interaction region after the electrostatic shockwave decay.Theoretical analysis and observations indicate that the filaments are because of collisionless mechanisms,which are caused by the electromagnetic instability,such as the beam-Weibel instability.Collision experiments were also carried out for comparison and no filaments were generated.Interactions of two counter-streaming plasmas driven by high power laser pulses are studied on Shenguang II laser facility. Filamentary structures were observed in the interaction region after the electrostatic shockwave decay. Theoretical analysis and observations indicate that the filaments are because of collisionless mechanisms, which are caused by the electromagnetic in- stability, such as the beam-Weibel instability. Collision experiments were also carried out for comparison and no filaments were generated.

关 键 词：laser-produced plasmas coilisionless shock waves Weibel instability 

分 类 号：P353[天文地球—空间物理学]