Fermi-Dirac电子-正电子-离子磁等离子体中的非线性离子波动力学
Dynamics of nonlinear ion-waves in Fermi-Dirac electron-positron-ion magnetoplasmas
摘要：
在量子流体力学模型的基础上，利用传统的扩展多尺度方法研究了由相对论超冷电子、正电子和正动力学离子组成的稠密磁化等离子体中孤立子结构的斜传播和迎头碰撞.数值计算了等离子体质量密度、归一化磁场强度、磁场与孤子传输的夹角以及相对正电子数密度等参数对迎头碰撞相移、特征孤子振幅和宽度的影响。目前的调查的相关性，适当的等离子体参数的天体物理致密磁化物体，如白矮星，是解决。
英文摘要：
Oblique propagation and head-on collisions of solitary structures is studied in a dense magnetized plasma comprised of relativistic ultra-cold electrons and positrons and positive dynamic ions using conventional extended multi-scales technique, in the ground of quantum hydrodynamics model. The variations of head-on collision phase-shift as well as the characteristic soliton amplitude and width is evaluated numerically in terms of other plasma parameters such as mass-density, normalized magnetic field strength, its angle with respect to the soliton propagation and the relative positron number-density. The relevance of current investigations, with appropriate plasma parameters for the astrophysical dense magnetized objects such as white-dwarfs, is addressed.
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