文章基本信息

标题：Kappa Distribution Function Effects on Landau Damping in Electrostatic Vlasov Simulation
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作者：Yue-Hung Chen ; Yasutaro Nishimura ; Chio-Zong Cheng 等
期刊名称：Terrestrial Atmospheric and Oceanic Sciences
印刷版ISSN：1017-0839
出版年度：2011
卷号：24
期号：2
页码：273-280
DOI：10.3319/TAO.2012.10.26.01(SEC)
出版社：Chinese Geoscience Union
摘要：The non-thermal high-energy electron effects on Langmuir wave-particle interaction are investigated using an initial value approach. A Vlasov-Poisson simulation is employed based on the splitting scheme by Cheng and Knorr (1976). The kappa distribution function is taken as an example of non-thermal electrons. The modification is manifested as an increase in the Landau damping rate and a decrease in the real frequency for a long wavelength limit. A part of the analyses using the modified plasma dispersion function (Summers and Thorne 1991) is reproduced for κ = 2, 3 and 6. The dispersion relation from the initial value simulation and the plasma dispersion function compare favorably. (PACS numbers: 52.35.Fp, 52.35.Sb, 52.65.Ff).
关键词：Kappa distribution function; Modified plasma dispersion function; Nonlinear Landau damping; Vlasov equilibria;