Ion energy distribution in a radio frequency sheath of plasma with Kappa electron velocity distribution | |
Ou, Jing1,3; Huang, Yueheng1,2 | |
刊名 | CONTRIBUTIONS TO PLASMA PHYSICS |
2020-10-19 | |
关键词 | ion energy distribution Kappa distribution radio frequency sheath |
ISSN号 | 0863-1042 |
DOI | 10.1002/ctpp.202000108 |
英文摘要 | A hybrid model consisting of a one-dimensional radio frequency sheath model and an equivalent circuit model is used to investigate the effect of the non-Maxwellian plasma with enhanced electron tails on ion energy distribution (IED) at the plasma-wall interface. With the assumption that electrons obey the Kappa distribution in which the parameter kappa characterizes the deviation from Maxwellian distribution, the bimodal shape of the IED can always be found with the decrease of kappa under the condition of current experimental advanced superconducting tokamak (EAST) discharges during the ion cyclotron range of frequency wave heating. However, the height of the low-energy peak of the IED decreases, while the high-energy peak does not change significantly. In addition, the IED shifts towards the higher-energy regime, and the width of the IED expands with the decrease of kappa. It is also shown that frequency and amplitude of the disturbance current, bulk plasma density, and ion temperature are the crucial parameters for determining the shape of IED even in the presence of super-thermal electrons. |
资助项目 | National Key R&D Program of China[2017YFE0300400] ; National Natural Science Foundation of China[11775257] ; National Natural Science Foundation of China[11805113] |
WOS研究方向 | Physics |
语种 | 英语 |
出版者 | WILEY-V C H VERLAG GMBH |
WOS记录号 | WOS:000581039600001 |
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/334002/104588] |
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, Peoples R China 3.Chinese Acad Sci, Ctr Magnet Fus Theory, Hefei, Peoples R China |
推荐引用方式 GB/T 7714 | Ou, Jing,Huang, Yueheng. Ion energy distribution in a radio frequency sheath of plasma with Kappa electron velocity distribution[J]. CONTRIBUTIONS TO PLASMA PHYSICS,2020. |
APA | Ou, Jing,&Huang, Yueheng.(2020).Ion energy distribution in a radio frequency sheath of plasma with Kappa electron velocity distribution.CONTRIBUTIONS TO PLASMA PHYSICS. |
MLA | Ou, Jing,et al."Ion energy distribution in a radio frequency sheath of plasma with Kappa electron velocity distribution".CONTRIBUTIONS TO PLASMA PHYSICS (2020). |
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