Effects of energetic particles on zonal flow generation by toroidal Alfv�n eigenmode

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/104552

Title:	Effects of energetic particles on zonal flow generation by toroidal Alfv�n eigenmode
Authors:	陳騮;Qiu, Z.;Chen, L.;Zonca, F.
Contributors:	理學院物理學系
Date:	2016-09-01
Issue Date:	2026-04-23 11:52:23 (UTC+8)
Publisher:	American Institute of Physics;AIP Publishing
Abstract:	摘要： Generation of zonal flow (ZF) by energetic particle (EP) driven toroidal Alfvén eigenmode (TAE) is investigated using nonlinear gyrokinetic theory. It is found that nonlinear resonant EP contribution dominates over the usual Reynolds and Maxwell stresses due to thermal plasma nonlinear response. ZF can be forced driven in the linear growth stage of TAE, with the growth rate being twice the TAE growth rate. The ZF generation mechanism is shown to be related to polarization induced by resonant EP nonlinearity. The generated ZF has both the usual meso-scale and micro-scale radial structures. Possible consequences of this forced driven ZF on the nonlinear dynamics of TAE are also discussed. 出版者： AIP Publishing 出版日期： 2016-09-01 出處： Physics of Plasmas, 2016-09, Vol.23 (9) 資源來源： AIP Journals (American Institute of Physics) 版權： Author(s) 識別號： ISSN: 1070-664X 識別號： EISSN: 1089-7674 識別號： DOI: 10.1063/1.4962997 識別號： CODEN: PHPAEN
Appears in Collections:	[Department of Physics] journal & Dissertation

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