Dynamical behaviour of transverse plasmons in pair plasmas  

作　　者：刘三秋 刘勇 李晓卿 

机构地区：[1]School of Materials Science and Engineering,Nanchang University [2]Department of Physics,Nanchang University [3]School of Sciences,Nantong University

出　　处：《Chinese Physics B》2011年第1期463-467,共5页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China(Grant No.2010CB635112);the National Natural Science Foundation of China(Grant No.10963002);the International Science and Technology Cooperation Program of China(Grant No.2009DFA02320)

摘　　要：This paper analytically investigates the nonlinear behaviour of transverse plasraons in pair plasmas on the basis of the nonlinear governing equations obtained from Vlasov-Maxwell equations. It shows that high frequency transverse plasmons are modulationally unstable with respect to the uniform state of the pair plasma. Such an instability would cause wave field collapse into a localized region. During the collapse process, ponderomotive expulsion is greatly enhanced for the increase of wave field strength, leading to the formation of localized density cavitons which are significant for the future experimental research in the interaction between high frequency electromagnetic waves and pair plasmas.This paper analytically investigates the nonlinear behaviour of transverse plasraons in pair plasmas on the basis of the nonlinear governing equations obtained from Vlasov-Maxwell equations. It shows that high frequency transverse plasmons are modulationally unstable with respect to the uniform state of the pair plasma. Such an instability would cause wave field collapse into a localized region. During the collapse process, ponderomotive expulsion is greatly enhanced for the increase of wave field strength, leading to the formation of localized density cavitons which are significant for the future experimental research in the interaction between high frequency electromagnetic waves and pair plasmas.

关 键 词：transverse plasmon pair plasma modulational instability density caviton 

分 类 号：O53[理学—等离子体物理]