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Title: Effect of electron-to-ion mass ratio on radial electric field generation in tokamak

Abstract

Generation of coherent radial electric fields in plasma by drift-wave turbulence driven by plasma inhomogeneities is ab initio studied using gyro-kinetic particle simulation for conditions of operational tokamaks. In particular, the effect of the electron-to-ion mass ratio epsilon on the entire evolution of the plasma is considered. In conclusion, it is found that the electric field can be increased, and the turbulence-induced particle transport reduced, by making epsilon smaller, in agreement with many existing experimental observations.

Authors:
 [1];  [2];  [1];  [3];  [4]
  1. Zhejiang Univ., Hangzhou (People's Republic of China)
  2. Zhejiang Univ., Hangzhou (People's Republic of China); Southwest Institute of Physics, Chengdu (People's Republic of China)
  3. Zhejiang Univ., Hangzhou (People's Republic of China); Ruhr Univ., Bochum (Germany)
  4. Princeton Univ., Princeton, NJ (United States). Princeton Plasma Physics Lab.
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1414935
Grant/Contract Number:
2013GB104004; 2013GB111004; 2016FZA3003; 11235009; 11374262; 11475147
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Fusion
Additional Journal Information:
Journal Volume: 58; Journal Issue: 1; Journal ID: ISSN 0029-5515
Publisher:
IOP Science
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; radial electric field; tokamak transport; drift-wave turbulence; mass-ratio effects

Citation Formats

Li, Zhenqian, Dong, Jiaqi, Sheng, Zhengmao, Yu, M. Y., and Wang, Weixing. Effect of electron-to-ion mass ratio on radial electric field generation in tokamak. United States: N. p., 2017. Web. doi:10.1088/1741-4326/aa96ba.
Li, Zhenqian, Dong, Jiaqi, Sheng, Zhengmao, Yu, M. Y., & Wang, Weixing. Effect of electron-to-ion mass ratio on radial electric field generation in tokamak. United States. doi:10.1088/1741-4326/aa96ba.
Li, Zhenqian, Dong, Jiaqi, Sheng, Zhengmao, Yu, M. Y., and Wang, Weixing. Tue . "Effect of electron-to-ion mass ratio on radial electric field generation in tokamak". United States. doi:10.1088/1741-4326/aa96ba.
@article{osti_1414935,
title = {Effect of electron-to-ion mass ratio on radial electric field generation in tokamak},
author = {Li, Zhenqian and Dong, Jiaqi and Sheng, Zhengmao and Yu, M. Y. and Wang, Weixing},
abstractNote = {Generation of coherent radial electric fields in plasma by drift-wave turbulence driven by plasma inhomogeneities is ab initio studied using gyro-kinetic particle simulation for conditions of operational tokamaks. In particular, the effect of the electron-to-ion mass ratio epsilon on the entire evolution of the plasma is considered. In conclusion, it is found that the electric field can be increased, and the turbulence-induced particle transport reduced, by making epsilon smaller, in agreement with many existing experimental observations.},
doi = {10.1088/1741-4326/aa96ba},
journal = {Nuclear Fusion},
number = 1,
volume = 58,
place = {United States},
year = {Tue Nov 21 00:00:00 EST 2017},
month = {Tue Nov 21 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on November 21, 2018
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