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Title: Verification of gyrokinetic particle simulation of current-driven instability in fusion plasmas. IV. Drift-tearing mode

Abstract

Here, the drift-tearing instability due to diamagnetic drift effects is verified using the Gyrokinetic Toroidal Code (GTC). First, the classical (2,1) resistive tearing mode is verified in a cylindrical geometry with a fluid model. The dependence of the growth rate of the resistive tearing mode on the beta value of the plasma is obtained and is found to qualitatively agree with the theoretical prediction. A drift-tearing mode is subsequently generated when the equilibrium pressure gradient is significant. In this mode, diamagnetic drift effects result in a reduced growth rate and a real frequency equal to the electron diamagnetic frequency. The scaling relation between the diamagnetic frequency and the growth rate of the drift-tearing mode has been calculated. Lastly, this relation shows good agreement with the theoretical prediction for a relatively small resistivity; however, an obvious deviation arises when the resistivity is large.

Authors:
 [1]; ORCiD logo [2];  [3]; ORCiD logo [4];  [5];  [5];  [1]
+ Show Author Affiliations
  1. Univ. of Science and Technology of China, Hefei (China); Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences; Univ.of Chinese Academy of Sciences, Beijing (China)
  2. Univ. of Science and Technology of China, Hefei (China); Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences; Univ.of Chinese Academy of Sciences, Beijing (China); Songshan Lake Materials Lab., Dongguan, Guangdong (China)
  3. Univ. of Science and Technology of China, Hefei (China); Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences; Univ.of Chinese Academy of Sciences, Beijing (China); China Three Gorges Univ., Yichang, Hubei (China)
  4. Univ. of California, Irvine, CA (United States)
  5. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Laboratory for Condensed Matter Physics and CAS Key Laboratory of Soft Matter Physics, Institute of Physics, Chinese Academy of Sciences; Univ.of Chinese Academy of Sciences, Beijing (China)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1577612
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 26; Journal Issue: 9; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Shi, Hao, Zhang, Wenlu, Feng, Hongying, Lin, Zhihong, Dong, Chao, Bao, Jian, and Li, Ding. Verification of gyrokinetic particle simulation of current-driven instability in fusion plasmas. IV. Drift-tearing mode. United States: N. p., 2019. Web. doi:10.1063/1.5116332.
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Shi, Hao, Zhang, Wenlu, Feng, Hongying, Lin, Zhihong, Dong, Chao, Bao, Jian, & Li, Ding. Verification of gyrokinetic particle simulation of current-driven instability in fusion plasmas. IV. Drift-tearing mode. United States. doi:10.1063/1.5116332.
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Shi, Hao, Zhang, Wenlu, Feng, Hongying, Lin, Zhihong, Dong, Chao, Bao, Jian, and Li, Ding. Fri . "Verification of gyrokinetic particle simulation of current-driven instability in fusion plasmas. IV. Drift-tearing mode". United States. doi:10.1063/1.5116332. https://www.osti.gov/servlets/purl/1577612.
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@article{osti_1577612,
title = {Verification of gyrokinetic particle simulation of current-driven instability in fusion plasmas. IV. Drift-tearing mode},
author = {Shi, Hao and Zhang, Wenlu and Feng, Hongying and Lin, Zhihong and Dong, Chao and Bao, Jian and Li, Ding},
abstractNote = {Here, the drift-tearing instability due to diamagnetic drift effects is verified using the Gyrokinetic Toroidal Code (GTC). First, the classical (2,1) resistive tearing mode is verified in a cylindrical geometry with a fluid model. The dependence of the growth rate of the resistive tearing mode on the beta value of the plasma is obtained and is found to qualitatively agree with the theoretical prediction. A drift-tearing mode is subsequently generated when the equilibrium pressure gradient is significant. In this mode, diamagnetic drift effects result in a reduced growth rate and a real frequency equal to the electron diamagnetic frequency. The scaling relation between the diamagnetic frequency and the growth rate of the drift-tearing mode has been calculated. Lastly, this relation shows good agreement with the theoretical prediction for a relatively small resistivity; however, an obvious deviation arises when the resistivity is large.},
doi = {10.1063/1.5116332},
journal = {Physics of Plasmas},
number = 9,
volume = 26,
place = {United States},
year = {2019},
month = {9}
}
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DOI:  10.1063/1.5116332
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