Yuan Dawei1; Li Yutong2; Zhu Baojun2; Li Yanfei2; Zhong Jiayong3; Wei Huigang1; Liu Chang3; Yuan Xiaoxia3; Zhang Zhe2; Liang Guiyun1; Wang Feilu1; Li Fang2; Zhao Jiarui2; Hua Neng4; Zhu Baoqiang4; Zhu Jianqiang4; Jiang Shaoen5; Du Kai5; Ding Yongkun5; Zhao Gang1; Zhang Jie6
Source Publicationchinesephysicsb
AbstractA counter-streaming flow system is a test-bed to investigate the astrophysical collisionless shock (CS) formation in the laboratory. Electrostatic/electromagnetic instabilities, competitively growing in the system and exciting the CS formation, are sensitive to the flows parameters. One of the most important parameters is the velocity, determining what kind of instability contributes to the shock formation. Here we successfully measure the evolution of the counter-streaming flows within one shot using a multi-pulses imaging diagnostic technique. With the technique, the average velocity of the high-density-part (n(e) >= 8-9 x 10(19) cm(-3)) of the flow is directly measured to be of similar to 10(6) cm/s between 7 ns and 17 ns. Meanwhile, the average velocity of the low-density-part (n(e) <= 2 x 10(19) cm(-3)) can be estimated as similar to 10(7) cm/s. The experimental results show that a collisionless shock is formed during the low-density-part of the flow interacting with each other.
Funding Project[National Basic Research Program of China] ; [National Natural Science Foundation of China] ; [China Postdoctoral Science Foundation]
Document Type期刊论文
4.National Laboratory on High Power Lasers and Physics
5.Research Center for Laser Fusion, China Academy of Engineering Physics
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yuan Dawei,Li Yutong,Zhu Baojun,et al. applicationofmultipulseopticalimagingtomeasureevolutionoflaserproducedcounterstreamingflows[J]. chinesephysicsb,2017,26(5).
APA Yuan Dawei.,Li Yutong.,Zhu Baojun.,Li Yanfei.,Zhong Jiayong.,...&Zhang Jie.(2017).applicationofmultipulseopticalimagingtomeasureevolutionoflaserproducedcounterstreamingflows.chinesephysicsb,26(5).
MLA Yuan Dawei,et al."applicationofmultipulseopticalimagingtomeasureevolutionoflaserproducedcounterstreamingflows".chinesephysicsb 26.5(2017).
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