Excitation of nonlinear ion acoustic waves in CH plasmas

doi:10.1063/1.4960292

CORC > 北京大学 > 工学院

	Excitation of nonlinear ion acoustic waves in CH plasmas
	Feng, Q. S. ; Zheng, C. Y. ; Liu, Z. J. ; Xiao, C. Z. ; Wang, Q. ; He, X. T.
刊名	PHYSICS OF PLASMAS
	2016
关键词	STIMULATED BRILLOUIN-SCATTERING SATURATION DRIVEN RAMAN OSCILLATIONS SIMULATIONS BACKSCATTER INTEGRATION EQUATION REGIME
DOI	10.1063/1.4960292
英文摘要	Excitation of nonlinear ion acoustic wave (IAW) by an external electric field is demonstrated by Vlasov simulation. The frequency calculated by the dispersion relation with no damping is verified much closer to the resonance frequency of the small-amplitude nonlinear IAW than that calculated by the linear dispersion relation. When the wave number k lambda(De) increases, the linear Landau damping of the fast mode (its phase velocity is greater than any ion's thermal velocity) increases obviously in the region of T-i/T-e < 0.2 in which the fast mode is weakly damped mode. As a result, the deviation between the frequency calculated by the linear dispersion relation and that by the dispersion relation with no damping becomes larger with k lambda(De) increasing. When k lambda(De) is not large, such as k lambda(De) = 0.1, 0.3, 0.5, the nonlinear IAW can be excited by the driver with the linear frequency of the modes. However, when k lambda(De) is large, such as k lambda(De) = 0.7, the linear frequency cannot be applied to exciting the nonlinear IAW, while the frequency calculated by the dispersion relation with no damping can be applied to exciting the nonlinear IAW. Published by AIP Publishing.; National Natural Science Foundation of China [11575035, 11475030, 11435011]; National Basic Research Program of China [2013CB834101]; SCI(E); EI; ARTICLE; zheng_chunyang@iapcm.ac.cn; 8; 23
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/494423]
专题	工学院
推荐引用方式 GB/T 7714	Feng, Q. S.,Zheng, C. Y.,Liu, Z. J.,et al. Excitation of nonlinear ion acoustic waves in CH plasmas[J]. PHYSICS OF PLASMAS,2016.
APA	Feng, Q. S.,Zheng, C. Y.,Liu, Z. J.,Xiao, C. Z.,Wang, Q.,&He, X. T..(2016).Excitation of nonlinear ion acoustic waves in CH plasmas.PHYSICS OF PLASMAS.
MLA	Feng, Q. S.,et al."Excitation of nonlinear ion acoustic waves in CH plasmas".PHYSICS OF PLASMAS (2016).