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

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:
Grant/Contract Number:
2013GB104004; 2013GB111004; 2016FZA3003; 11235009; 11374262; 11475147
Type:
Accepted Manuscript
Journal Name:
Nuclear Fusion
Additional Journal Information:
Journal Volume: 58; Journal Issue: 1; Journal ID: ISSN 0029-5515
Publisher:
IOP Science
Research Org:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org:
USDOE
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
OSTI Identifier:
1414935