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首页> 外文期刊>Physics of plasmas >Ion acoustic solitons in unmagnetized inhomogeneous multi-ion component plasmas with vortex distributed electrons
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Ion acoustic solitons in unmagnetized inhomogeneous multi-ion component plasmas with vortex distributed electrons

机译：带有涡旋分布电子的非磁化非均质多离子组分等离子体中的离子声孤子

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摘要

The ion acoustic solitons are studied in an inhomogeneous multi-ion component plasma in the presence of heavy and light adiabatic ions and two temperature electrons with vortex distribution. The modified Korteweg-de Vries equation with an additional term due to density gradients is derived by employing reductive perturbation technique. It is found that the amplitude of the soliton enhances as the concentration ratio of cold to hot electrons, density gradient parameter and ion temperature are increased in the system. The effects of mass, charge ratios of heavy to light ions and electron temperature are also investigated on the structural as well as propagation characteristics of solitary wave. The equilibrium density profile is taken to be exponential. The phase velocity of ion acoustic wave is also studied as a function of various plasma parameters. The numerical results are presented for illustration.
机译：在存在重，轻绝热离子和两个具有涡旋分布的温度电子的情况下，在不均匀的多离子组分等离子体中研究离子声孤子。通过采用归纳摄动技术，导出了由于密度梯度而带有附加项的修正Korteweg-de Vries方程。发现系统中冷，热电子的浓度比，密度梯度参数和离子温度的升高，孤子的振幅都增加。还研究了质量，重离子与轻离子的电荷比和电子温度对孤波的结构及传播特性的影响。平衡密度分布被认为是指数的。还研究了离子声波的相速度作为各种等离子体参数的函数。数值结果用于说明。

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