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Title: Radial properties of the geodesic acoustic mode

Abstract

In magnetized toroidal plasmas, neoclassical effects and turbulent drift waves can induce the geodesic acoustic mode (GAM). We simulate the GAM using the gyro-kinetic code GTS for typical tokamak parameters and investigate its properties, especially its frequency continuum, evolution of its radial wave number, and propagation characteristics. The simulation findings are compared with those of the relevant theory and experiment. It is discovered that the radial phase velocity of the GAM is roughly proportional to the ion thermal speed.

Authors:
 [1];  [2];  [1]; ORCiD logo [3]; ORCiD logo [4]
  1. Zhejiang Univ., Hangzhou (China)
  2. Zhejiang Univ., Hangzhou (China); Southwest Inst. of Physics, Chengdu (China)
  3. Zhejiang Univ., Hangzhou (China); Ruhr Univ., Bochum (Germany)
  4. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE; National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1543846
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 24; Journal Issue: 10; 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

Li, Zhenqian, Dong, Jiaqi, Sheng, Zhengmao, Yu, M. Y., and Wang, Weixing. Radial properties of the geodesic acoustic mode. United States: N. p., 2017. Web. doi:10.1063/1.5004427.
Li, Zhenqian, Dong, Jiaqi, Sheng, Zhengmao, Yu, M. Y., & Wang, Weixing. Radial properties of the geodesic acoustic mode. United States. doi:10.1063/1.5004427.
Li, Zhenqian, Dong, Jiaqi, Sheng, Zhengmao, Yu, M. Y., and Wang, Weixing. Tue . "Radial properties of the geodesic acoustic mode". United States. doi:10.1063/1.5004427. https://www.osti.gov/servlets/purl/1543846.
@article{osti_1543846,
title = {Radial properties of the geodesic acoustic mode},
author = {Li, Zhenqian and Dong, Jiaqi and Sheng, Zhengmao and Yu, M. Y. and Wang, Weixing},
abstractNote = {In magnetized toroidal plasmas, neoclassical effects and turbulent drift waves can induce the geodesic acoustic mode (GAM). We simulate the GAM using the gyro-kinetic code GTS for typical tokamak parameters and investigate its properties, especially its frequency continuum, evolution of its radial wave number, and propagation characteristics. The simulation findings are compared with those of the relevant theory and experiment. It is discovered that the radial phase velocity of the GAM is roughly proportional to the ion thermal speed.},
doi = {10.1063/1.5004427},
journal = {Physics of Plasmas},
number = 10,
volume = 24,
place = {United States},
year = {2017},
month = {9}
}

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