Radial properties of the geodesic acoustic mode

Li, Zhenqian; Dong, Jiaqi; Sheng, Zhengmao; Yu, M. Y.; Wang, Weixing

doi:10.1063/1.5004427

Title: Radial properties of the geodesic acoustic mode

Journal Article · Tue Sep 26 00:00:00 EDT 2017 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.5004427· OSTI ID:1543846

Li, Zhenqian ^[1]; Dong, Jiaqi ^[2]; Sheng, Zhengmao ^[1];

^[3];

^[4]

Zhejiang Univ., Hangzhou (China)
Zhejiang Univ., Hangzhou (China); Southwest Inst. of Physics, Chengdu (China)
Zhejiang Univ., Hangzhou (China); Ruhr Univ., Bochum (Germany)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

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.

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Research Organization:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)

Sponsoring Organization:: USDOE; National Natural Science Foundation of China (NSFC)

OSTI ID:: 1543846

Journal Information:: Physics of Plasmas, Vol. 24, Issue 10; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 3 works

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Cited By (2)

Kinetic theory of geodesic acoustic modes in toroidal plasmas: a brief review Qiu, Zhiyong; Chen, Liu; Zonca, Fulvio Plasma Science and Technology, Vol. 20, Issue 9 https://doi.org/10.1088/2058-6272/aab4f0	journal	July 2018
Kinetic theory of geodesic acoustic modes in toroidal plasmas: a brief review Qiu, Zhiyong; Chen, Liu; Zonca, Fulvio arXiv https://doi.org/10.48550/arxiv.1801.01622	text	January 2018

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