Electron beam driven lower hybrid waves in a dusty plasma

被引：8

作者：

Prakash, Ved ^{[1
,4
]}

Vijayshri ^{[1
]}

Sharma, Suresh C. ^{[2
]}

Gupta, Ruby ^{[3
]}

机构：

[1] Indira Gandhi Natl Open Univ, Sch Sci, New Delhi 110068, India

[2] Delhi Technol Univ, Dept Appl Phys, Delhi 110042, India

[3] Univ Delhi, Swami Shraddhanand Coll, Dept Phys, Delhi 110036, India

[4] Minist Earth Sci, India Meteorol Dept, New Delhi 110003, India

来源：

PHYSICS OF PLASMAS | 2013年 / 20卷 / 05期

关键词：

ION-CYCLOTRON WAVES; CHARGE-FLUCTUATION; EXCITATION; INSTABILITY;

D O I：

10.1063/1.4803506

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

An electron beam propagating through a magnetized dusty plasma drives electrostatic lower hybrid waves to instability via Cerenkov interaction. A dispersion relation and the growth rate of the instability for this process have been derived taking into account the dust charge fluctuations. The frequency and the growth rate of the unstable wave increase with the relative density of negatively charged dust grains. Moreover, the growth rate of the instability increases with beam density and scales as the one-third power of the beam density. In addition, the dependence of the growth rate on the beam velocity is also discussed. (C) 2013 AIP Publishing LLC.

引用

页数：6

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