Geometrically self-similar ion acceleration in collisionless plasma beam expansion
文献类型：期刊论文
| 作者 | Hu Y(胡远); Wang J; Sun QH(孙泉华)
|
| 刊名 | PLASMA SOURCES SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2020-12-01 |
| 卷号 | 29期号:12页码:125004 |
| ISSN号 | 0963-0252 |
| 关键词 | geometrically expanding plasma VOLTAGE SPACE PLATFORMS self-similarity SIMULATIONS ion acceleration ARGON facility effects MODEL fully kinetic FLOW |
| DOI | 10.1088/1361-6595/abbf9b |
| 英文摘要 | Fully kinetic particle-in-cell simulations are carried out to study ion acceleration in a geometrically expanding plasma beam. The ion acceleration is demonstrated to be essentially self-similar. An analytical model is developed for ion acceleration evaluation. The plasma plume is found to be fully expanded after about 20 times of the beam radius (R-0) downstream of the beam exit, where the ion velocity reaches the maximum. The maximum ion velocity increase is about twice of the initial ion acoustic speed. Hence, to minimize the facility effects on plasma plume experiments in a vacuum chamber, the chamber needs to provide a plume expansion region of at least 20R(0) along the beam direction so the expansion process is not terminated prematurely. |
| 分类号 | 二类/Q1 |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000597097500001 |
| 资助机构 | LHD Youth Innovation Fund from the State Key Laboratory of High Temperature Gas Dynamics [LHD2019CX12} ; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDA17030100} |
| 其他责任者 | Sun, QH |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/85414]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.{Sun Quanhua} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 2.{Wang Joseph} Univ Southern Calif Dept Astronaut Engn Los Angeles CA 90089 USA 3.{Hu Yuan, Sun Quanhua} Chinese Acad Sci State Key Lab High Temp Gas Dynam Inst Mech Beijing 100190 Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu Y,Wang J,Sun QH. Geometrically self-similar ion acceleration in collisionless plasma beam expansion[J]. PLASMA SOURCES SCIENCE & TECHNOLOGY,2020,29(12):125004. |
| APA | 胡远,Wang J,&孙泉华.(2020).Geometrically self-similar ion acceleration in collisionless plasma beam expansion.PLASMA SOURCES SCIENCE & TECHNOLOGY,29(12),125004. |
| MLA | 胡远,et al."Geometrically self-similar ion acceleration in collisionless plasma beam expansion".PLASMA SOURCES SCIENCE & TECHNOLOGY 29.12(2020):125004. |
入库方式： OAI收割
来源：力学研究所
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