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arXiv 2008.10306physics.plasm-ph
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相反极性尘埃等离子体系统中的尘埃-声波静电势与自引力势

Dust-acoustic wave electrostatic and self-gravitational potentials in an opposite polarity dusty plasma system

Abdul Mannan, Sergio De Nicola, Renato Fedele, A A Mamun

AI总结:

本文通过数值求解正负尘埃粒子的连续性方程和动量方程导出的耦合非线性微分方程,研究了相反极性尘埃等离子体中尘埃-声波的静电势与自引力势特性,并比较了两者差异,结果对空间和实验室等离子体系统具有参考意义。

摘要:

考虑了一个相反极性尘埃等离子体系统(包含几微米大小的、质量较大的相反极性尘埃粒子和遵循玻尔兹曼定律的单电荷离子粒子)。通过对与这种相反极性尘埃等离子体介质中尘埃-声(DA)波相关的静电势和自引力势的两个耦合二阶非线性微分方程进行数值分析,正确地得到了尘埃-声波静电势和自引力势的性质。这些耦合非线性微分方程是由正、负尘埃粒子的连续性方程和动量方程以及离子粒子的玻尔兹曼定律推导出来的。将尘埃-声波自引力势的基本特征与尘埃-声波静电势的基本特征进行了比较。提到了我们的结果与空间和实验室相反极性尘埃等离子体系统的相关性。

英文摘要:

An opposite polarity dusty plasma system (containing a few micron size massive opposite polarity dust species and singly charged ion species following Boltzmann law) is considered. The nature of dust-acoustic (DA) wave electrostatic and self-gravitational potentials are correctly found by the numerical analysis of two coupled second-order nonlinear differential equations for electrostatic and self-gravitational potentials associated with the DA waves in such an opposite polarity dusty plasma medium. These coupled nonlinear differential equations are derived from the continuity and momentum equations for positive and negative dust species, and the Boltzmann law for ion species. The basic features of the DA wave self-gravitational potential are compared with that of the DA wave electrostatic potential. The relevance of our results to space and laboratory opposite polarity dusty plasma systems is mentioned.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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