Transition between resistive ballooning mode and toroidal drift wave mode at the edge of tokamak plasmas

2018 ◽  
Vol 25 (3) ◽  
pp. 032505 ◽  
Author(s):  
X. D. Peng ◽  
J. Q. Xu ◽  
H. B. Jiang ◽  
G. Wang
Keyword(s):  
Wave Mode ◽  
Tokamak Plasmas ◽  
Drift Wave ◽  
Ballooning Mode

GTC Simulation of Ideal Ballooning Mode in Tokamak Plasmas

2013 ◽  
Vol 15 (6) ◽  
pp. 499-505 ◽  
Author(s):  
Zebin Li ◽  
Guoya Sun ◽  
Ihor Holod ◽  
Yong Xiao ◽  
Wenlu Zhang ◽  
...  
Keyword(s):  
Tokamak Plasmas ◽  
Ballooning Mode

Collisional Effects on Drift Wave Microturbulence in Tokamak Plasmas

2018 ◽  
Vol 35 (10) ◽  
pp. 105201
Author(s):  
Wei Hu ◽  
Hong-Ying Feng ◽  
Chao Dong
Keyword(s):  
Tokamak Plasmas ◽  
Drift Wave

Theoretical studies of low-frequency Alfvén modes in tokamak plasmas

2021 ◽  
Author(s):  
R R Ma ◽  
Liu Chen ◽  
Fulvio Zonca ◽  
Yueyan Li ◽  
Zhiyong Qiu
Keyword(s):  
Low Frequency ◽  
Acoustic Mode ◽  
Frequency Region ◽  
Physical Parameters ◽  
Linear Wave ◽  
Tokamak Plasmas ◽  
High Frequency Region ◽  
Energetic Ions ◽  
Ballooning Mode ◽  
Spectral Patterns

Abstract Linear wave properties of the low-frequency Alfvén modes (LFAMs) observed in the DIII-D tokamak experiments with reversed magnetic shear [Nucl. Fusion 61, 016029 (2021)] are theoretically studied and delineated based on the general fishbone-like dispersion relation. By adopting the representative experimental equilibrium parameters, it is found that, in the absence of energetic ions, the LFAM is a kinetic ballooning mode instability of reactive-type with a dominant Alfvénic polarization. More specifically, due to diamagnetic and trapped particle effects, the LFAM can be coupled with the beta-induced Alfvén-acoustic mode in the low-frequency region (frequency much less than the thermal-ion transit and/or bounce frequency); or with the beta-induced Alfvén eigenmode in the high frequency region (frequency higher than or comparable to the thermal-ion transit frequency); resulting in reactive-type instabilities. Moreover, the ‘Christmas light’ and ‘mountain peak’ spectral patterns of LFAMs as well as the dependence of instability drive on the electron temperature observed in the experiments can be theoretically interpreted by varying the relevant physical parameters. Conditions when dissipative-type instabilities may set in are also discussed.

Ambipolar potential effect on a drift-wave mode in a tandem-mirror plasma

1990 ◽  
Vol 64 (19) ◽  
pp. 2281-2284 ◽  
Author(s):  
A. Mase ◽  
J. H. Jeong ◽  
A. Itakura ◽  
K. Ishii ◽  
M. Inutake ◽  
...  
Keyword(s):  
Potential Effect ◽  
Wave Mode ◽  
Tandem Mirror ◽  
Drift Wave

scholarly journals Kinetic Full Wave Analysis of Electron Cyclotron Wave Mode Conversion in Tokamak Plasmas

2016 ◽  
Vol 11 (0) ◽  
pp. 2403070-2403070 ◽  
Author(s):  
Shabbir A. KHAN ◽  
Atsushi FUKUYAMA ◽  
Hiroe IGAMI ◽  
Hiroshi IDEI
Keyword(s):  
Mode Conversion ◽  
Wave Mode ◽  
Electron Cyclotron ◽  
Tokamak Plasmas ◽  
Wave Analysis ◽  
Full Wave ◽  
Full Wave Analysis ◽  
Electron Cyclotron Wave
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