MAGNETOROTATIONAL INSTABILITY IN A COLLISIONAL WEAKLY IONIZED PLASMA

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	MAGNETOROTATIONAL INSTABILITY IN A COLLISIONAL WEAKLY IONIZED PLASMA
	Ren, HJ ; Cao, JT ; Wu, ZW
刊名	ASTROPHYSICAL JOURNAL
	2012
卷号	754 期号:2
关键词	LOCAL SHEAR INSTABILITY MAGNETIZED DISKS PROTOPLANETARY DISKS ACCRETION DISKS LINEAR-ANALYSIS TRANSPORT STABILITY TURBULENCE EVOLUTION
ISSN号	0004-637X
通讯作者	Ren, HJ: Univ Sci & Technol China, CAS Key Lab Basic Plasma Phys, Hefei 230026, Peoples R China.
中文摘要	We use a multi-fluid model to describe the dynamic behavior of electrons, ions, and neutrals in a weakly ionized three-component plasma and investigate the differentially rotational instability. Charged species and neutrals are supposed to have the same angular velocity to eliminate the equilibrium current and collisions in the unperturbed state. By taking into account collisions between electrons/ions and neutrals, we derive the analytical expression of the general local dispersion relation and examine the collision effect on the rotational instability in different limiting cases. Collisions on neutrals are neglected in the first case to obtain a simplified dispersion, in which collisions play an important role in the instability criteria. In the low-frequency region, the previous result in the magnetohydrodynamic model is reproduced. The collision effect in the high-frequency case for non-magnetized electrons is found to be similar to the low-frequency region, but can induce instability for both the negative and positive radial derivative of rotational frequency.
收录类别	SCI
资助信息	National Natural Science Foundation of China [11105148, 11075163, 11005110]; National Basic Research Program of China [2008CB717800]; China Postdoctoral Science Foundation [20100480691]
语种	英语
公开日期	2013-09-18
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/41688]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Ren, HJ,Cao, JT,Wu, ZW. MAGNETOROTATIONAL INSTABILITY IN A COLLISIONAL WEAKLY IONIZED PLASMA[J]. ASTROPHYSICAL JOURNAL,2012,754(2).
APA	Ren, HJ,Cao, JT,&Wu, ZW.(2012).MAGNETOROTATIONAL INSTABILITY IN A COLLISIONAL WEAKLY IONIZED PLASMA.ASTROPHYSICAL JOURNAL,754(2).
MLA	Ren, HJ,et al."MAGNETOROTATIONAL INSTABILITY IN A COLLISIONAL WEAKLY IONIZED PLASMA".ASTROPHYSICAL JOURNAL 754.2(2012).