Dynamical behaviour of transverse plasmons in pair plasmas

doi:10.1088/1674-1056/20/1/015203

中国物理B ›› 2011, Vol. 20 ›› Issue (1): 15203-015203.doi: 10.1088/1674-1056/20/1/015203

Dynamical behaviour of transverse plasmons in pair plasmas

李晓卿¹, 刘三秋², 刘勇³

(1)Department of Physics, Nanchang University, Nanchang 330031, China; (2)School of Materials Science and Engineering, Nanchang University, Nanchang 330031, China;Department of Physics, Nanchang University, Nanchang 330031, China; (3)School of Materials Science and Engineering, Nanchang University, Nanchang 330031, China;School of Sciences, Nantong University, Nantong 226019, China

收稿日期:2010-05-11 修回日期:2010-05-30 出版日期:2011-01-15 发布日期:2011-01-15
基金资助:
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).

Dynamical behaviour of transverse plasmons in pair plasmas

Liu San-Qiu(刘三秋)^a)b)†, Liu Yong(刘勇)^a)c), and Li Xiao-Qing(李晓卿)^b)

^a School of Materials Science and Engineering, Nanchang University, Nanchang 330031, China; ^b Department of Physics, Nanchang University, Nanchang 330031, China; ^c School of Sciences, Nantong University, Nantong 226019, China

Received:2010-05-11 Revised:2010-05-30 Online:2011-01-15 Published:2011-01-15
Supported by:
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/Abstract

摘要： This paper analytically investigates the nonlinear behaviour of transverse plasmons 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

Abstract: This paper analytically investigates the nonlinear behaviour of transverse plasmons 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.

Key words: transverse plasmon, pair plasma, modulational instability, density caviton

中图分类号: (Electron-positron plasmas)

52.27.Ep

52.35.Mw (Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.)) 52.40.Db (Electromagnetic (nonlaser) radiation interactions with plasma)

刘三秋, 刘勇, 李晓卿. Dynamical behaviour of transverse plasmons in pair plasmas[J]. 中国物理B, 2011, 20(1): 15203-015203.

Liu San-Qiu(刘三秋), Liu Yong(刘勇), and Li Xiao-Qing(李晓卿). Dynamical behaviour of transverse plasmons in pair plasmas[J]. Chin. Phys. B, 2011, 20(1): 15203-015203.

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Dynamical behaviour of transverse plasmons in pair plasmas

Dynamical behaviour of transverse plasmons in pair plasmas

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