标题： 磁化等离子体中离子声波动力学的普遍特性，重点在于Tsallis分布 显示英文标题

标题： Universal characteristics of ion-acoustic wave dynamics in magnetized plasmas with emphasis on Tsallis distribution

摘要： 使用包含相位变化的扩展庞加莱-莱特希尔-库奥（PLK）约化摄动方法，表明对于不同惯性无粒子分布的磁化等离子体，离子声波的传播和对头碰撞存在共同特性。 例如，值得注意的是，孤立子振幅始终与磁场强度无关，而严格依赖于其相对于传播方向的角度。 两种类型的孤立子（压缩型或稀疏型）都被证明存在，它们通过临界角$\gamma=\pi/2$或其他取决于等离子体分数参数的临界值来定义。 这些临界等离子体参数值也决定了对头碰撞相移的符号。 此外，证明了对于给定的一组等离子体参数，总存在一个相对于磁场方向的传播相对角度，此时孤立子宽度最大。 当前发现适用于广泛的磁化等离子体，包括含有背景尘埃成分或两种温度惯性无粒子的等离子体，并可用于研究实验室或天体物理磁等离子体。 显示英文摘要

摘要： Using the extended Poincar\'{e}-Lighthill-Kuo (PLK) reductive perturbation method, which incorporates the phase-shift variations, it is shown that common features on propagation and head-on collisions of ion-acoustic waves exist for a magnetized plasmas of different inertial-less particle distributions. For instance it is remarked that, the soliton amplitude is always independent of magnetic field strength while strictly depends on its angle regarding the propagation direction. Both types of solitons (compressive or rarefactive) are shown to exist which are defined through the critical angle $\gamma=\pi/2$ or other critical values depending on plasma fractional parameters. These critical plasma parameter values also define the sign of head-on collision phase shift. Furthermore, it is proved that for a given set of plasma parameters there is always a relative angle of propagation regarding to that of the magnetic-field for which the soliton width is maximum. Current findings applies to a wide range of magnetized plasmas including those containing background dust ingredients or two-temperature inertial-less particles and may be used to study laboratory or astrophysical magnetoplasmas.