Numerical investigation of a radio frequency sheath with supra-thermal electrons in the presence of the magnetic field

doi:10.1088/1402-4896/ac198c

	Numerical investigation of a radio frequency sheath with supra-thermal electrons in the presence of the magnetic field
	Ou, Jing 1; Huang, Yueheng 2
刊名	PHYSICA SCRIPTA
	2021-12-01
卷号	96
关键词	RF sheath supra-thermal electrons IED magnetized plasma
ISSN号	0031-8949
DOI	10.1088/1402-4896/ac198c
通讯作者	Ou, Jing(ouj@ipp.ac.cn)
英文摘要	The structure of the magnetized radio-frequency (RF) sheath of plasma containing supra-thermal electrons is studied numerically with a one-dimensional hybrid model consisting of a collisionless sheath model and an equivalent circuit model of the sheath. It is found that effect of the external magnetic field on the sheath structure depends on the direction of the disturbance current source. As the plasma magnetization or angle between the magnetic field and the wall is increased, both the sheath thickness and sheath potential drop increase during the positive disturbance current source at the wall, while they change slightly during the negative disturbance current source at the wall. For the different supra-thermal electron populations parameterized by Kappa velocity distribution, both the sheath thickness and sheath potential drop are always larger in the magnetized sheath than in the unmagnetized sheath. Compared with in the unmagnetized sheath, the width of the ion energy distribution (IED) in the magnetized sheath expands towards the high energy regime, and the low-energy peak of the IED decreases while the high-energy peak of the IED changes a little.
资助项目	National Key R&D Program of China[2017YFE0300404] ; National Natural Science Foundation of China[11775257] ; National Natural Science Foundation of China[11805133]
WOS关键词	ION-CYCLOTRON RANGE ; PLASMA SHEATH ; ENERGY ; WAVES
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000682175000001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123117]
专题	中国科学院合肥物质科学研究院
通讯作者	Ou, Jing
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China
推荐引用方式 GB/T 7714	Ou, Jing,Huang, Yueheng. Numerical investigation of a radio frequency sheath with supra-thermal electrons in the presence of the magnetic field[J]. PHYSICA SCRIPTA,2021,96.
APA	Ou, Jing,&Huang, Yueheng.(2021).Numerical investigation of a radio frequency sheath with supra-thermal electrons in the presence of the magnetic field.PHYSICA SCRIPTA,96.
MLA	Ou, Jing,et al."Numerical investigation of a radio frequency sheath with supra-thermal electrons in the presence of the magnetic field".PHYSICA SCRIPTA 96(2021).