Effects of heavy ion temperature on low-frequency kinetic Alfven waves

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 太阳和太阳系等离子体研究团组

	Effects of heavy ion temperature on low-frequency kinetic Alfven waves
	Yang, L.1,2 ; Wu, D. J.1
刊名	PHYSICS OF PLASMAS
	2011-10-01
卷号	18 期号:10 页码:102101
关键词	dispersion (wave) plasma Alfven waves plasma light propagation plasma temperature
ISSN号	1070-664X
英文摘要	Heavy ion-electron (or proton) temperature ratio varies in a wide range in the solar and space environment. In this paper, proton and heavy ion temperatures are included in a three-fluid plasma model. For the specified parameters, low-frequency (<< heavy ion gyrofrequency) kinetic Alfveacuten waves (KAWs) with sub- and super-Alfveacutenic speeds are found to coexist in the same plasma environment. Our results show that the temperature ratio of heavy ions to electrons can considerably affect the dispersion, propagation, and electromagnetic polarizations of the KAWs. In particular, the temperature ratio can increase the ratio of parallel to perpendicular electric fields and the normalized electric to magnetic field ratio, the variations of which are greatly different in regions with a high heavy ion temperature and with a low one. The results may help to understand the physical mechanism of some energization processes of heavy ions in the solar and space plasma environment. Effects of the ratio of electron thermal to Alfveacuten speeds and the heavy ion abundance on these parameters are also discussed. (C) 2011 American Institute of Physics. [doi:10.1063/1.3646331]
学科主题	Physics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Fluids & Plasmas
研究领域[WOS]	Physics
关键词[WOS]	SOLAR-WIND ; ELECTRON ACCELERATION ; WHITE-LIGHT ; MINOR IONS ; PLASMA ; CONSTRAINTS ; EXCITATION ; DENSITIES ; AURORA ; CORONA
收录类别	SCI
语种	英语
WOS记录号	WOS:000296529600005
公开日期	2012-08-07
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/4504]
专题	紫金山天文台_太阳和太阳系等离子体研究团组
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Yang, L.,Wu, D. J.. Effects of heavy ion temperature on low-frequency kinetic Alfven waves[J]. PHYSICS OF PLASMAS,2011,18(10):102101.
APA	Yang, L.,&Wu, D. J..(2011).Effects of heavy ion temperature on low-frequency kinetic Alfven waves.PHYSICS OF PLASMAS,18(10),102101.
MLA	Yang, L.,et al."Effects of heavy ion temperature on low-frequency kinetic Alfven waves".PHYSICS OF PLASMAS 18.10(2011):102101.