TITLE

Nonlinear simulation of toroidal Alfvén eigenmode with source and sink

AUTHOR(S)
Jianying Lang; Guo-Yong Fu; Yang Chen
PUB. DATE
April 2010
SOURCE
Physics of Plasmas;Apr2010, Vol. 17 Issue 4, p042309
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Kinetic/magnetohydrodynamic hybrid simulations are carried out to investigate the nonlinear dynamics of energetic particle-driven toroidal Alfvén eigenmode with collision and source/sink. For cases well above marginal stability, the mode saturation is approximately steady state with finite collision frequency. The calculated scaling of saturation level with collision frequency agrees well with analytic theory. For cases near-marginal stability at low collision rates, the mode saturation exhibits pulsation behavior with frequency chirps up and down.
ACCESSION #
50174235

 

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