The influence of dust particles on electromagnetic ion cyclotron waves in a bi-Lorentzian plasma
Abstract
The influence of dust particles on electromagnetic ion cyclotron (EMIC) waves, propagating parallel to the magnetic field, in a plasma where the hot ions are modelled by a bi-Lorentzian or Kappa distribution has been studied. The electrons and dust particles have been treated as cold. Expressions for the dispersion relations and growth/damping rates in both high- and low-{beta} plasmas have been derived. For the low-{beta} case temperature anisotropy is the source of instability in an electron{endash}ion plasma. This instability is strongly influenced by the temperature anisotropy of the hot ions and the charge and density of the dust particles; the instability increases with these parameters. However, in high-{beta} plasmas, the instability is driven by the dust. The growth rate increases with the charge on the dust; but with increasing dust densities the EMIC wave propagates almost freely. {copyright} {ital 1997 American Institute of Physics.}
- Authors:
-
- School of Pure and Applied Physics, Mahatma Gandhi University, Priyadarshini Hills, Kottayam-686 560, Kerala (India)
- Department of Physics, University of Kerala, Kariavattom-695 581, Trivandrum (India)
- Publication Date:
- OSTI Identifier:
- 542585
- Resource Type:
- Journal Article
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 4; Journal Issue: 10; Other Information: PBD: Oct 1997
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION; PLASMA IMPURITIES; PLASMA WAVES; DISPERSION RELATIONS; PLASMA DENSITY; DUSTS; LOW-BETA PLASMA; HIGH-BETA PLASMA; SOLAR WIND; DISTRIBUTION FUNCTIONS; INSTABILITY GROWTH RATES
Citation Formats
Venugopal, C, Varughese, J K, Antony, S, Anilkumar, C P, and Renuka, G. The influence of dust particles on electromagnetic ion cyclotron waves in a bi-Lorentzian plasma. United States: N. p., 1997.
Web. doi:10.1063/1.872241.
Venugopal, C, Varughese, J K, Antony, S, Anilkumar, C P, & Renuka, G. The influence of dust particles on electromagnetic ion cyclotron waves in a bi-Lorentzian plasma. United States. https://doi.org/10.1063/1.872241
Venugopal, C, Varughese, J K, Antony, S, Anilkumar, C P, and Renuka, G. 1997.
"The influence of dust particles on electromagnetic ion cyclotron waves in a bi-Lorentzian plasma". United States. https://doi.org/10.1063/1.872241.
@article{osti_542585,
title = {The influence of dust particles on electromagnetic ion cyclotron waves in a bi-Lorentzian plasma},
author = {Venugopal, C and Varughese, J K and Antony, S and Anilkumar, C P and Renuka, G},
abstractNote = {The influence of dust particles on electromagnetic ion cyclotron (EMIC) waves, propagating parallel to the magnetic field, in a plasma where the hot ions are modelled by a bi-Lorentzian or Kappa distribution has been studied. The electrons and dust particles have been treated as cold. Expressions for the dispersion relations and growth/damping rates in both high- and low-{beta} plasmas have been derived. For the low-{beta} case temperature anisotropy is the source of instability in an electron{endash}ion plasma. This instability is strongly influenced by the temperature anisotropy of the hot ions and the charge and density of the dust particles; the instability increases with these parameters. However, in high-{beta} plasmas, the instability is driven by the dust. The growth rate increases with the charge on the dust; but with increasing dust densities the EMIC wave propagates almost freely. {copyright} {ital 1997 American Institute of Physics.}},
doi = {10.1063/1.872241},
url = {https://www.osti.gov/biblio/542585},
journal = {Physics of Plasmas},
number = 10,
volume = 4,
place = {United States},
year = {Wed Oct 01 00:00:00 EDT 1997},
month = {Wed Oct 01 00:00:00 EDT 1997}
}