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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Roles of arbitrarily charged heavy ions and degenerate plasma pressure in cylindrical and spherical IA shock waves
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Roles of arbitrarily charged heavy ions and degenerate plasma pressure in cylindrical and spherical IA shock waves

机译:任意电荷的重离子和简并的等离子体压力在圆柱形和球形IA冲击波中的作用

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摘要

A rigorous theoretical investigation has been made to study the existence and basic features of the ion acoustic (IA) shock structures in an unmagnetized, collisionless dense plasma system containing degenerate electron and ion fluids, and arbitrarily charged static heavy ions. This investigation is valid for both the non-relativistic limit and the ultra-relativistic limit. The reductive perturbation technique has been employed to derive the standard Burgers equation. The solution of this equation has been analyzed both for planar geometry and for nonplanar geometry. The basic features (speed, amplitude, width, and so on) of these electrostatic shock structures have been briefly discussed. The basic properties of the IA shock waves are found to be significantly modified by the effects of arbitrarily charged static heavy ions. It has also been found that the properties of IA shock waves in nonplanar (cylindrical or spherical) geometry significantly differ from those in planar (one-dimensional) geometry. The implications of our results for space and interstellar compact objects such as white dwarfs, neutron stars, black holes, and so on have been briefly discussed.
机译:进行了严格的理论研究,以研究在包含简并电子和离子流体以及任意带电的静态重离子的未磁化,无碰撞的密集等离子体系统中离子声学(IA)冲击结构的存在和基本特征。此调查对于非相对论极限和超相对论极限均有效。还原摄动技术已被用来推导标准的伯格斯方程。已针对平面几何和非平面几何分析了该方程的解。这些静电冲击结构的基本特征(速度,幅度,宽度等)已被简要讨论。发现IA冲击波的基本特性被任意带电的静态重离子的影响显着改变。还已经发现,IA冲击波在非平面(圆柱或球形)几何形状中的特性与在平面(一维)几何形状中的特性显着不同。我们的结果对于诸如白矮星,中子星,黑洞等空间和星际紧凑物体的含义已经进行了简短的讨论。

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