Spontaneous excitation of convective cells by kinetic Alfv�n waves

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題名:	Spontaneous excitation of convective cells by kinetic Alfv�n waves
作者:	陳騮;Zonca, Fulvio;Lin, Yu;Chen, Liu
貢獻者:	理學院物理學系
關鍵詞:	52.30.Gz;52.35.Bj;52.35.Mw;Direct numerical simulation;Excitation;Instability;Larmor radius;Magnetohydrodynamic waves;Magnetohydrodynamics;Mathematical analysis;Spontaneous;Stability;Transport
日期:	2015-12-01
上傳時間:	2026-04-23 14:26:26 (UTC+8)
出版者:	IOP Publishing Ltd.;Les Ulis: EDP Sciences, IOP Publishing and Societ� Italiana di Fisica
摘要:	摘要： Spontaneous excitation of convective cells by kinetic Alfvén waves in a uniform plasma is investigated analytically employing the nonlinear gyrokinetic equations. Self-consistent theoretical analysis demonstrates the novel results that excitation via modulational instability can only occur when the finite ion Larmor radius effects are properly included, and, furthermore, both the electrostatic and magnetostatic convective cells are excited simultaneously. Theoretical predictions are verified with direct numerical simulations; showing excellent agreement in the modulational growth rate and field structures. Significant implications of the present results to the cross-field transport in space and fusion plasmas are also briefly discussed. 其他題名： EPL 出版者： Les Ulis: EDP Sciences, IOP Publishing and Società Italiana di Fisica 出版日期： 2015-12-01 出處： Europhysics letters, 2015-12, Vol.112 (6), p.65001-65001 資源來源： Institute of Physics Journals 版權： Copyright © EPLA, 2015 識別號： ISSN: 0295-5075 識別號： EISSN: 1286-4854 識別號： DOI: 10.1209/0295-5075/112/65001 識別號： CODEN: EULEEJ
顯示於類別:	[物理學系] 期刊論文

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