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首页> 外文期刊>Physics of plasmas >Three-dimensional instability of dust ion-acoustic solitary waves in a magnetized dusty plasma with two different types of nonisothermal electrons
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Three-dimensional instability of dust ion-acoustic solitary waves in a magnetized dusty plasma with two different types of nonisothermal electrons

机译：具有两种不同类型的非等温电子的磁化尘埃等离子体中尘埃离子声孤立波的三维不稳定性

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摘要

The nonlinear propagation of dust ion-acoustic solitary waves (DIASWs) in a magnetized dusty plasma which consists of two different types of nonisothermal electrons, hot adiabatic inertial ions fluid and immobile negatively charged dust particles is studied. The modified Zakharov-Kuznetsov (MZK) equation, describing the small but finite amplitude DIASWs, is derived using a reductive perturbation method. The combined effects of the external magnetic field, obliqueness (i.e., the propagation angle), and the two-temperature nonisothermal electrons, which are found to significantly modify the basic properties of DIASWs, are explicitly examined. The three-dimensional instability of DIASWs is also analyzed using the small- k (long wavelength plane wave) perturbation expansion technique. The results show that the external magnetic field, the propagation angle, and the two-temperature nonisothermal electrons have strong effects on the instability criterion as well as the growth rate.
机译：研究了粉尘离子声孤立波（DIASWs）在磁化粉尘等离子体中的非线性传播，该粉尘等离子体由两种不同类型的非等温电子，热绝热惯性离子流体和固定的带负电荷的粉尘颗粒组成。修正的Zakharov-Kuznetsov（MZK）方程使用归纳摄动法导出，描述了小而有限的幅度DIASWs。明确检查了外部磁场，倾斜度（即传播角）和两温非等温电子的组合效应，发现它们显着改变了DIASW的基本特性。 DIASWs的三维不稳定性也使用小k（长波长平面波）摄动扩展技术进行了分析。结果表明，外部磁场，传播角和两温非等温电子对不稳定性判据以及生长速率有很大影响。

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