Dispersion relation of dust electrostatic oscillations in a nonextensive plasma

Dispersion relation of dust electrostatic oscillations in a nonextensive plasma
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非广延等离子体中尘埃静电振荡的色散关系

DOI:
10.1088/0031-8949/90/10/105602
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发表时间:
2015-09
期刊:
影响因子:
2.9
通讯作者:
Liu Shi-Bing
Liu Shi-Bing
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Qiu Hui-Bin;Song Hai-Ying;Liu Shi-Bing

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The generalized dispersion equation for longitudinal oscillation in an unmagnetized, collisionless and isotropic dusty plasma composed of nonextensive distributed electrons, ions and dust grains is derived based on kinetic theory. The analytical dispersion relation of dust acoustic waves which is related to nonextensive parameters q &agr; ?> ( &agr; = e , i , d ?> ) is obtained. In the limit q &agr; → 1 ?> , the result based on the Maxwellian distribution is recovered. Using the numerical method, we obtain the complete numerical dispersion curve of longitudinal oscillation which is in good agreement with the analytical result of dust acoustic wave at v Td ≪ v &phgr; ≪ v Ti ≪ v Te ?> .
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