Geodesic acoustic mode excitation by a spatially broad energetic particle beam

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/104840

Title:	Geodesic acoustic mode excitation by a spatially broad energetic particle beam
Authors:	陳騮;Qiu, Z.;Zonca, F.;Chen, L.
Contributors:	理學院物理學系
Keywords:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY;Acoustic coupling;Acoustic properties;Acoustics;Combustion;Density;Energetic particles;GEODESIC ACOUSTIC MODE, ENERGETIC PARTICLES;Mathematical analysis;Plasmas
Date:	2012-08-01
Issue Date:	2026-04-23 11:59:30 (UTC+8)
Publisher:	American Institute of Physics;United States: AIP Publishing
Abstract:	摘要： Global radial eigenmodes of energetic-particle-induced geodesic acoustic mode are systematically studied, and their properties are found to depend on the nonuniformities of both the geodesic acoustic mode continuous spectrum and the energetic particle (EP) radial density profile. For a broad EP drive, the eigenmode equation valid for arbitrary EP drift orbit width is derived, and the excited energetic-particle-induced geodesic acoustic mode is shown to be strongly coupled to the geodesic acoustic mode continuous spectrum; resulting in a finite drive threshold in EP density. The cross-scale couplings between micro-, meso-, and macro-scales, discussed in this work, are mediated by the EP dynamics and have many interesting similarities with complex behaviors, expected in burning plasmas of fusion interest. 出版者： United States: AIP Publishing 出版日期： 2012-08-01 出處： Physics of Plasmas, 2012-08, Vol.19 (8) 資源來源： AIP Journals online 識別號： ISSN: 1070-664X 識別號： EISSN: 1089-7674 識別號： DOI: 10.1063/1.4745191
Appears in Collections:	[Department of Physics] journal & Dissertation

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