Condition of Alfven Gauss wave-packet evolvement to solitons and criterion of Alfven wave modulation instability

Zhang Jie-Qiu; Liang Chang-Hong; Wang Geng-Guo; Zhu Jia-Zhen

doi:10.7498/aps.52.890

Abstract
By analyzing the integral constant C1 of Alfven solitons, the condition of Alfven Gaussian wave-packets evolvement to solitary waves is put forward as C1≤0. This hypothesis is also confirmed by numerical simulation results. Furthermore,simulation results show that the number of evolving solitons does not depend only on integral constant C0 or C1. The conclusions in Refs. ［1］ and ［2］ result from the shorter evolving time. Comparing with other papers, we find that C0≤0 can be used as a criterion of Alfven wave modulation instability.

Keywords:
Alfven wave /

DNLS equation /

instability of modulation /

Alfven soliton /

Gauss wave packet
Authors and contacts
Zhang Jie-Qiu³,

Liang Chang-Hong²,

Wang Geng-Guo¹,

Zhu Jia-Zhen¹

(1)西安电子科技大学电子工程学院，西安 710071; (2)西安电子科技大学天线与微波技术国家重点实验室，西安 710071; (3)西安电子科技大学天线与微波技术国家重点实验室，西安 710071;空军工程大学工程学院，西安 710038
References

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Vol. 52, Issue 4 - 2003-02-20

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Condition of Alfven Gauss wave-packet evolvement to solitons and criterion of Alfven wave modulation instability

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