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首页> 外文期刊>Indian Journal of Physics >Effect of nonthermal electrons and positrons on ion-acoustic solitary waves in a plasma with warm drifting ions
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Effect of nonthermal electrons and positrons on ion-acoustic solitary waves in a plasma with warm drifting ions

机译:非热电子和正电子对带有温漂离子的等离子体中的离子声孤立波的影响

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摘要

Using Sagdeev potential technique, ion-acoustic solitary waves have been theoretically studied in collisionless unmagnetized plasma consisting of nonthermal electrons, nonthermal positrons and warm drifting positive ions. Ion-acoustic solitary wave solutions have been obtained and its profiles have been numerically analyzed with respect to plasma parameters. The nonthermal parameters and temperatures are shown to play significant role on the formation and nature of solitary waves. It is shown that the nature, amplitude and width of lower- and higher-order solitons depend sensitively on these plasma parameters. The dependence of Sagdeev potential profile on different plasma parameters has also been examined. We have found that stronger nonthermality leads to shorter and wider solitons.
机译:使用Sagdeev势技术,理论上研究了由非热电子,非热正电子和热漂移正离子组成的无碰撞非磁化等离子体中的离子声孤波。已获得离子声孤立波解决方案,并已针对等离子体参数对其分布进行了数值分析。非热参数和温度显示出对孤立波的形成和性质起重要作用。结果表明,低阶和高阶孤子的性质,幅度和宽度敏感地取决于这些等离子体参数。 Sagdeev电位曲线对不同血浆参数的依赖性也已得到检验。我们发现,较强的非热性导致孤子越来越短。

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