Modulational Instability of the Coupled Waves Between High-Frequency Magnetosonic Wave and Low-Frequency Magnetosonic Wave

被引：0
|
作者：
Wang, Fang-Ping [1 ]
Han, Juan-Fang [1 ]
Duan, Wen-Shan [1 ]
机构：
[1] Northwest Normal Univ, Coll Phys & Elect Engn, Lanzhou 730070, Peoples R China
来源：
IEEE TRANSACTIONS ON PLASMA SCIENCE | 2021年 / 49卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Magnetosonic wave (MSW); modulational instability; ponderomotive force; MAGNETIC-FIELDS; LASER; PLASMA; AMPLIFICATION; GENERATION; PULSES;
D O I：
10.1109/TPS.2020.3043419
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
It is well known that the ponderomotive force of a relatively high-frequency magnetosonic wave (HMSW) can excite the low-frequency magnetosonic wave (LMSW). By using the coupled system of dynamical equations of LMSW in the presence of a ponderomotive force of HMSW (pump wave), we have studied the modulational instability of the coupled waves between the HMSW and the LMSW. It is found that there are instabilities for the coupled waves between the HMSW and the LMSW. It is also found that the growth rate depends on several system parameters, such as the frequency of HMSW, the perturbation wave vector, and the background magnetic field.
引用
收藏
页码：396 / 400
页数：5
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