Application of multi-pulse optical imaging to measure evolution of laser-produced counter-streaming flows
文献类型：期刊论文
| 作者 | Yuan, Dawei1 ; Li, Yutong2,3,9; Zhu, Baojun2; Li, Yanfei2; Zhong, Jiayong4,9; Wei, Huigang1; Liu, Chang4; Yuan, Xiaoxia4; Zhang, Zhe2; Liang, Guiyun1
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| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2017-05-01 |
| 卷号 | 26期号:5 |
| 关键词 | collisionless shock electrostatic/electromagnetic instabilities imaging diagnostic technique |
| 英文摘要 | A 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | COLLISIONLESS SHOCKS ; ACCELERATION ; ASTROPHYSICS ; PLASMAS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000402793000006 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8785]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Inst Phys, Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 4.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 5.Natl Lab High Power Lasers & Phys, Shanghai 201800, Peoples R China 6.China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Peoples R China 7.Shanghai Jiao Tong Univ, Key Lab Laser Plasmas, Minist Educ, Shanghai 200240, Peoples R China 8.Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China 9.Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA CICIFSA, Shanghai 200240, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Dawei,Li, Yutong,Zhu, Baojun,et al. Application of multi-pulse optical imaging to measure evolution of laser-produced counter-streaming flows[J]. CHINESE PHYSICS B,2017,26(5). |
| APA | Yuan, Dawei.,Li, Yutong.,Zhu, Baojun.,Li, Yanfei.,Zhong, Jiayong.,...&Zhang, Jie.(2017).Application of multi-pulse optical imaging to measure evolution of laser-produced counter-streaming flows.CHINESE PHYSICS B,26(5). |
| MLA | Yuan, Dawei,et al."Application of multi-pulse optical imaging to measure evolution of laser-produced counter-streaming flows".CHINESE PHYSICS B 26.5(2017). |
入库方式： OAI收割
来源：国家天文台
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