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首页> 外文期刊>Plasma physics reports >Dust-acoustic solitary waves in a four-component adiabatic magnetized dusty plasma
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Dust-acoustic solitary waves in a four-component adiabatic magnetized dusty plasma

机译：四分量绝热磁化尘埃等离子体中的尘埃声孤波

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Theoretical investigation has been made on obliquely propagating dust-acoustic (DA) solitary waves (SWs) in a magnetized dusty plasma which consists of non-inertial adiabatic electron and ion fluids, and inertial negatively as well as positively charged adiabatic dust fluids. The reductive perturbation method has been employed to derive the Korteweg-de Vries equation which admits a solitary wave solution for small but finite amplitude limit. It has been shown that the basic features (speed, height, thickness, etc.) of such DA solitary structures are significantly modified by adiabaticity of plasma fluids, opposite polarity dust components, and the obliqueness of external magnetic field. The SWs have been changed from compressive to rarefactive depending on the value of μ (a parameter determining the number of positive dust present in this plasma model). The present investigation can be of relevance to the electrostatic solitary structures observed in various dusty plasma environments (viz. cometary tails, upper mesosphere, Jupiter's magnetosphere, etc.).
机译：已经对由非惯性绝热电子和离子流体以及惯性带负电和带正电绝热粉尘流体组成的磁化尘埃等离子体中的倾斜传播的粉尘声（DA）孤波（SW）进行了理论研究。还原摄动法已被用来推导Korteweg-de Vries方程，该方程允许在一个小而有限的振幅极限下实现孤立波解。已经显示，通过等离子体流体的绝热性，相反极性的尘埃成分以及外部磁场的倾斜，显着地改变了这种DA孤立结构的基本特征（速度，高度，厚度等）。根据μ的值（确定此等离子体模型中存在的正尘埃数量的参数），SW已从压缩更改为稀疏。本研究可能与在各种尘土飞扬的等离子体环境（即彗星尾巴，上部中层，木星磁层等）中观察到的静电孤立结构有关。

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