Abstract

Raman scattering instability (RSI) is investigated in a magnetized quantum electron–ion plasma by applying the separate spin evolution-quantum hydrodynamic (SSE-QHD) model. The governing differential equations of large amplitude transverse electromagnetic waves (TEM) and electron plasma waves (EP) are derived in spin polarization effect. The nonlinear interaction of spin polarized TEM and EP waves is studied by using the standard technique of phasor matching to formulate general dispersion relation of RSI, which admits both three-wave decay and modulational instabilities. It is found that the growth rates of the obtained instabilities are a strong function of amplitude of TEM and quantum effects such as Bohm potential, electron spin effect and spin dependence Coulomb exchange interaction. Here, the growth rate of three-wave decay instability is found to increase with the increase of spin effect, whereas for oscillatory modulational instability the growth rate is observed to occur at a particular wavelength.

中文翻译：

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简并自旋极化等离子体中横向电磁波的拉曼散射不稳定性

摘要

通过应用独立的自旋演化-量子流体动力学（SSE-QHD）模型，在磁化量子电子离子等离子体中研究了拉曼散射不稳定性（RSI）。在自旋极化效应中导出了大振幅横向电磁波（TEM）和电子等离子体波（EP）的控制微分方程。利用相量匹配的标准技术研究了自旋极化TEM和EP波的非线性相互作用，从而建立了RSI的一般色散关系，该关系允许三波衰减和调制不稳定性。发现所获得的不稳定性的生长速率是TEM的振幅和量子效应（例如，玻姆势，电子自旋效应和自旋依赖性库仑交换相互作用）的强函数。这里，