中文版 | English
Title

Impact of impurities on drift wave instabilities in reversed-field pinch plasmas

Author
Corresponding AuthorLi, Jingchun
Publication Years
2022-10-12
DOI
Source Title
ISSN
2470-0045
EISSN
2470-0053
Volume106Issue:4
Abstract
The drift wave in the presence of impurity ions was investigated numerically in reversed-field pinch plasmas, using the gyrokinetic integral eigenmode equation. By comparing the results of regular and hollow plasma density profiles, it was found that the ion temperature gradient mode for the hollow density profile case is much harder to excite. For the impurity effects, when the impurity density gradient is opposite to the electrons, namely when L-ez (L-ez = L-ne/L-nz with 1/L-n being the density gradient scale length, and the subscript "e" and "z" indicates electrons and impurity ions, respectively) is negative, the impurities can enhance the instability. On the contrary, when L-ez is positive, the instability is stabilized. Regarding the trapped electron mode (TEM), the growth rate for plasmas with a hollow density profile remains smaller than that of the standard density gradient. There exists a threshold in L-ez. When L(ez )is less than this value, the impurities destabilize the TEMs, while when L-ez is greater than this value, the impurities stabilize the TEMs. In addition, the influence of the collisionality on the TEMs was also studied.
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
First ; Corresponding
Funding Project
[11905109] ; [11905080] ; [12275354] ; [11947238] ; [2018YFE0303102] ; [2017YFE0301702]
WOS Research Area
Physics
WOS Subject
Physics, Fluids & Plasmas ; Physics, Mathematical
WOS Accession No
WOS:000871073200005
Publisher
ESI Research Field
PHYSICS
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/406844
DepartmentDepartment of Earth and Space Sciences
Affiliation
1.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Guangdong, Peoples R China
2.Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China
3.ENN Sci & Technol Dev Co Ltd, Langfang 065001, Peoples R China
4.Civial Aviat Univ China, Coll Sci, Tianjin 300300, Peoples R China
5.United Kingdom Atom Energy Author, Culham Ctr Fus Energy, Culham Sci Ctr, Abingdon OX14 3DB, England
First Author AffilicationDepartment of Earth and Space Sciences
Corresponding Author AffilicationDepartment of Earth and Space Sciences
First Author's First AffilicationDepartment of Earth and Space Sciences
Recommended Citation
GB/T 7714
Li, Jingchun,Liu, Songfen,Zhang, Yilong,et al. Impact of impurities on drift wave instabilities in reversed-field pinch plasmas[J]. PHYSICAL REVIEW E,2022,106(4).
APA
Li, Jingchun,Liu, Songfen,Zhang, Yilong,Dong, Jiaqi,Kong, Wei,&Shi, P..(2022).Impact of impurities on drift wave instabilities in reversed-field pinch plasmas.PHYSICAL REVIEW E,106(4).
MLA
Li, Jingchun,et al."Impact of impurities on drift wave instabilities in reversed-field pinch plasmas".PHYSICAL REVIEW E 106.4(2022).
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