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- Title
Phase-mixing of high-frequency electrostatic oscillations in multi-component dusty plasmas.
- Authors
Biswas, Anubhab; Maity, Chandan
- Abstract
A theoretical investigation of the phase-mixing phenomenon of Langmuir oscillations (LOs) in a multi-component dusty plasma is presented. The plasma under study is a four-component plasma consisting of electrons, positrons, singly ionised positive ions and positive (or negative) polarity dust grains. The massive dust grains are assumed to form a fixed charge neutralising background, while the electrons, positrons and ions are considered to take part in the wave dynamics. A simple perturbative analysis of the governing fluid-Maxwell's equations leads us to an approximate relation for phase-mixing time of LOs, improving some earlier existing results. It is revealed that even though the dust grains remain motionless in the background, they still have significant impact on the phase-mixing process of LOs in such plasmas. It is found that the nature of the charge on the dust grains and the equilibrium dust density profoundly affect the phase-mixing time. The results of this investigation is expected to have relevance in space-plasma environments.
- Subjects
OSCILLATIONS; CATIONS; ELECTRON plasma; DUSTY plasmas; POSITRONS; DUST
- Publication
Pramana: Journal of Physics, 2024, Vol 98, Issue 2, p1
- ISSN
0304-4289
- Publication type
Article
- DOI
10.1007/s12043-024-02750-1