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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Electrostatic solitary pulses in magnetized relativistic spin-polarized quantum plasma
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Electrostatic solitary pulses in magnetized relativistic spin-polarized quantum plasma

机译：磁化相对论旋转偏振量子等离子体中的静电孤立脉冲

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摘要

A Magnetized Relativistic Quantum Hydrodynamics model is used to study the behavior of low fRequency electrostatic solitons in relativistic magnetized spin-polarized quantum plasma. The constituents of the plasma are inertia-less relativistic quantum electrons having concentration of both spin-up n(e up arrow) and spin-down n(e down arrow) species, and relativistic classical ions. We have used two-dimensional geometry in which a uniform ambient magnetic field is applied in the z-direction i.e. B = B-0(z) over bar. The linear analysis shows the presence of two types of modes; slow (acoustic) mode and a fast Langmuir-like mode. A nonlinear Zakharov-Kuznetsov (ZK) type equation is derived for the electrostatic potential by using reductive perturbation technique. The dependence of the spin density polarization ratio. on the properties of solitary wave profile is being investigated. It has been demonstrated that amplitude as well as width of the soliton depend significantly on the spin density polarization ratio, obliqueness and relativistic effects. We have also observed that the soliton solution of the ZK equation is unstable to the oblique perturbations. The instability growth rate varies appreciably with the density polarization and relativistic effects.
机译：磁化相对论量子流体动力学模型用于研究低频静电孤子在相对论磁化旋转量子等离子体中的低频静电孤子的行为。等离子体的成分是惰性的相对论量子电子，具有旋转N（E向上箭头）的浓度和旋转N（E向下箭头）物种，以及相对论的经典离子。我们已经使用了二维几何形状，其中在Z方向上施加均匀的环境磁场.B = B = B-0（Z）上方。线性分析显示出两种模式的存在;慢（声学）模式和快速Langmuir的模式。通过使用还原性扰动技术导出非线性Zakharov-Kuznetsov（ZK）型方程。旋转密度偏振率的依赖性。研究了孤立波形曲线的性质。已经证明振幅以及孤子的宽度显着取决于旋转密度偏振率，倾斜度和相对论效应。我们还观察到ZK方程的孤子解决方案对倾斜扰动不稳定。不稳定的生长速率随着密度极化和相对论的效应而变化。

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