Formation and evolution of a pair of collisionless shocks in counter-streaming flows
文献类型：期刊论文
| 作者 | Yuan, Dawei1 ; Li, Yutong2,3,9; Liu, Meng3,4; Zhong, Jiayong3,5; Zhu, Baojun2; Li, Yanfei2; Wei, Huigang1; Han, Bo1; Pei, Xiaoxing1; Zhao, Jiarui2
|
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2017-03-07 |
| 卷号 | 7 |
| 英文摘要 | A pair of collisionless shocks that propagate in the opposite directions are firstly observed in the interactions of laser-produced counter-streaming flows. The flows are generated by irradiating a pair of opposing copper foils with eight laser beams at the Shenguang-II (SG-II) laser facility. The experimental results indicate that the excited shocks are collisionless and electrostatic, in good agreement with the theoretical model of electrostatic shock. The particle-in-cell (PIC) simulations verify that a strong electrostatic field growing from the interaction region contributes to the shocks formation. The evolution is driven by the thermal pressure gradient between the upstream and the downstream. Theoretical analysis indicates that the strength of the shocks is enhanced with the decreasing density ratio during both flows interpenetration. The positive feedback can offset the shock decay process. This is probable the main reason why the electrostatic shocks can keep stable for a longer time in our experiment. |
| WOS标题词 | Science & Technology |
| 类目[WOS] | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | SUPERNOVA REMNANT ; PLASMA ; ACCELERATION ; GENERATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000395585000001 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8301]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Inst Phys, Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 3.Shanghai Jiao Tong Univ, Collaborat Innovat Ctr IFSA CICIFSA, Shanghai 200240, Peoples R China 4.Shanghai Jiao Tong Univ, Dept Phys & Astron, Key Lab Laser Plasmas MoE, Shanghai 200240, Peoples R China 5.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 6.China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China 7.China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Peoples R China 8.Chinese Acad Sci, Natl Lab High Power Laser & Phys, Shanghai 201800, Peoples R China 9.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Dawei,Li, Yutong,Liu, Meng,et al. Formation and evolution of a pair of collisionless shocks in counter-streaming flows[J]. SCIENTIFIC REPORTS,2017,7. |
| APA | Yuan, Dawei.,Li, Yutong.,Liu, Meng.,Zhong, Jiayong.,Zhu, Baojun.,...&Zhang, Jie.(2017).Formation and evolution of a pair of collisionless shocks in counter-streaming flows.SCIENTIFIC REPORTS,7. |
| MLA | Yuan, Dawei,et al."Formation and evolution of a pair of collisionless shocks in counter-streaming flows".SCIENTIFIC REPORTS 7(2017). |
入库方式： OAI收割
来源：国家天文台
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