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DOI | 10.1002/2017GL072624 |
Identify the nonlinear wave-particle interaction regime in rising tone chorus generation | |
Tao, Xin1,2; Zonca, Fulvio3,4,5; Chen, Liu4,5,6 | |
2017-04-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Italy; USA |
英文摘要 | Nonlinear wave-particle interaction during chorus wave generation was assumed to be in the adiabatic regime in previous studies, i.e., the particle phase-space trapping timescale (tau(tr)) is considered to be much smaller than the nonlinear dynamics timescale tau(NL). In this work, we use particle-in-cell simulations to demonstrate that tau(tr)similar to tau(NL), i.e., the interaction regime during chorus generation is in the nonadiabatic regime. The timescale for nonlinear evolution of resonant particle phase-space structures is determined by making the time-averaged power exchange plot, which clearly demonstrates that particles with pitch angle near 80 degrees make the most significant contribution to wave growth. The phase-space trapping timescale is also comparable to the amplitude modulation timescale of chorus, suggesting that chorus subpackets are formed because of the self-consistent evolution of resonant particle phase-space structures and spatiotemporal features of the fluctuation spectrum. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401847500002 |
WOS关键词 | TRIGGERED VLF EMISSIONS ; ELECTRONS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/29171 |
专题 | 气候变化 |
作者单位 | 1.Univ Sci & Technol China, Dept Geophys & Planetary Sci, CAS Key Lab Geospace Environm, Hefei, Peoples R China; 2.Collaborat Innovat Ctr Astronaut Sci & Technol, Harbin, Peoples R China; 3.ENEA CR Frascati, Frascati, Italy; 4.Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou, Zhejiang, Peoples R China; 5.Zhejiang Univ, Dept Phys, Hangzhou, Zhejiang, Peoples R China; 6.Univ Calif Irvine, Dept Phys & Astron, Irvine, CA USA |
推荐引用方式 GB/T 7714 | Tao, Xin,Zonca, Fulvio,Chen, Liu. Identify the nonlinear wave-particle interaction regime in rising tone chorus generation[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(8). |
APA | Tao, Xin,Zonca, Fulvio,&Chen, Liu.(2017).Identify the nonlinear wave-particle interaction regime in rising tone chorus generation.GEOPHYSICAL RESEARCH LETTERS,44(8). |
MLA | Tao, Xin,et al."Identify the nonlinear wave-particle interaction regime in rising tone chorus generation".GEOPHYSICAL RESEARCH LETTERS 44.8(2017). |
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