Electromagnetic ion-cyclotron instability driven by combined loss-cone and temperature anisotropy distribution of suprathermal ions

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

	Electromagnetic ion-cyclotron instability driven by combined loss-cone and temperature anisotropy distribution of suprathermal ions
	Hua YuePing; Wu DeJin; Wang DeYu
刊名	CHINESE SCIENCE BULLETIN
	2011
卷号	56 期号:3 页码:257-262
关键词	acceleration of particles plasmas solar wind waves
ISSN号	1001-6538
英文摘要	Electromagnetic ion cyclotron (EMIC) waves, particularly their generation and excitation mechanisms, have been a subject of wide interest because of their potential importance in ion acceleration and heating. In this work, the parameter-dependence of EMIC instabilities is investigated with a combined loss-cone and temperature anisotropy distribution for suprathermal ions. The calculation of the linear growth rate of EMIC waves with an arbitrary propagation angle is presented. The results show that the growth rates of EMIC waves propagating quasi-perpendicular to the ambient magnetic field increase as the loss-cone parameter alpha increases, whereas the growth rates of EMIC waves propagating quasi-parallel to the ambient magnetic field increase as the temperature anisotropy parameter A (T) increases. This indicates that the free energies associated with the loss-cone and temperature anisotropic distributions are primarily responsible for the excitation of the quasi-perpendicular and parallel propagating EMIC waves, respectively, and provides us with a more comprehensive understanding of excitation and generation mechanisms for EMIC waves in space plasmas.
学科主题	Science & Technology - Other Topics
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	1-2 MAGNETIC PULSATIONS ; EQUATORIAL MAGNETOSPHERE ; SOLAR-WIND ; WAVES ; PLASMA ; MAGNETOSHEATH ; PROTON ; FLARES ; GROWTH ; ORBIT
收录类别	SCI
语种	英语
WOS记录号	WOS:000286604800005
公开日期	2012-08-07
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/4502]
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	Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
推荐引用方式 GB/T 7714	Hua YuePing,Wu DeJin,Wang DeYu. Electromagnetic ion-cyclotron instability driven by combined loss-cone and temperature anisotropy distribution of suprathermal ions[J]. CHINESE SCIENCE BULLETIN,2011,56(3):257-262.
APA	Hua YuePing,Wu DeJin,&Wang DeYu.(2011).Electromagnetic ion-cyclotron instability driven by combined loss-cone and temperature anisotropy distribution of suprathermal ions.CHINESE SCIENCE BULLETIN,56(3),257-262.
MLA	Hua YuePing,et al."Electromagnetic ion-cyclotron instability driven by combined loss-cone and temperature anisotropy distribution of suprathermal ions".CHINESE SCIENCE BULLETIN 56.3(2011):257-262.