Effects of cold electron number density variation on whistler-mode wave growth
文献类型：期刊论文
| 作者 | Tang, R.; Summers, D.; Deng, X. |
| 刊名 | ANNALES GEOPHYSICAE
 |
| 出版日期 | 2014 |
| 卷号 | 32期号:7页码:889-898 |
| 关键词 | Space plasma physics wave-particle interactions |
| ISSN号 | 0992-7689 |
| 通讯作者 | Tang, R (reprint author), Nanchang Univ, Inst Space Sci & Technol, Nanchang 330031, Peoples R China. |
| 英文摘要 | We examine how the growth of magnetospheric whistler-mode waves depends on the cold (background) electron number density N-0. The analysis is carried out by varying the cold-plasma parameter a = (electron gyrofrequency)(2)/(electron plasma frequency) 2 which is proportional to 1/N-0. For given values of the thermal anisotropy A(T) and the ratio N-h/N-0, where N-h is the hot (energetic) electron number density, we find that, as N-0 decreases, the maximum values of the linear and nonlinear growth rates decrease and the threshold wave amplitude for nonlinear growth increases. Generally, as N-0 decreases, the region of (N-h/N-0, A(T))-parameter space in which nonlinear wave growth can occur becomes more limited; that is, as N-0 decreases, the parameter region permitting nonlinear wave growth shifts to the top right of (N-h/N-0, A(T)) space characterized by larger N-h/N-0 values and larger A(T) values. The results have implications for choosing input parameters for full-scale particle simulations and also in the analysis of whistler-mode chorus data. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/4478]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Tang, R.,Summers, D.,Deng, X.. Effects of cold electron number density variation on whistler-mode wave growth[J]. ANNALES GEOPHYSICAE,2014,32(7):889-898. |
| APA | Tang, R.,Summers, D.,&Deng, X..(2014).Effects of cold electron number density variation on whistler-mode wave growth.ANNALES GEOPHYSICAE,32(7),889-898. |
| MLA | Tang, R.,et al."Effects of cold electron number density variation on whistler-mode wave growth".ANNALES GEOPHYSICAE 32.7(2014):889-898. |
入库方式： OAI收割
来源：国家空间科学中心
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