4.1 Article

Instability of Dust Acoustic Waves in a Dusty Plasma with Dust Charge Variations and Two Different Temperatures for Both Electrons and Ions

Journal

PLASMA PHYSICS REPORTS
Volume 49, Issue 7, Pages 920-925

Publisher

PLEIADES PUBLISHING INC
DOI: 10.1134/S1063780X22601729

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The dispersion relation and instability of dust acoustic waves (DAWs) in an unmagnetized dusty plasma with two different temperatures for ions, two different temperatures for electrons, and dust charge fluctuations are studied. The effects of two different temperatures of ions (electrons), dust charge fluctuations, density ratio of ions, and density ratio of electrons significantly modify the conditions for instability. Furthermore, it is observed that only damping rate exists in such a dusty plasma.
The dispersion relation and instability of dust acoustic waves (DAWs) in an unmagnetized dusty plasma with two different temperatures for ions, two different temperatures for electrons, and dust charge fluctuations are investigated. Ions and electrons are assumed to be Maxwellian distributed. The orbital limited motion theory (OLM) is used to derive dust charge fluctuations. The conditions for the instability are found to be significantly modified by the effects of two different temperatures of ions (electrons), dust charge fluctuations, density ratio of ions and density ratio of electrons. Furthermore, it is observed that there is only damping rate in such dusty plasma.

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