A parametric study of the influence of non-thermal ions on linear dust-acoustic waves in an unmagnetized dusty plasma

The influence of non-thermal ions on linear dust-acoustic waves is studied in an unmagnetized plasma consisting of ions which have a non-thermal velocity distribution, Boltzmann-distributed electrons and streaming dust particles. A detailed examination is conducted of the dependence of the real freq...

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Bibliographic Details
Published in:Journal of plasma physics 2005-06, Vol.71 (3), p.345-358
Main Authors: MAHARAJ, S. K., PILLAY, S. R., BHARUTHRAM, R., SINGH, S. V., LAKHINA, G. S.
Format: Article
Language:English
Subjects:
Basic studies of specific kinds of plasmas
Dust
Dusty or complex plasmas
plasma crystals
Electrostatic waves and oscillations (e.g., ion-acoustic waves)
Electrostatic waves and oscillations (eg, ion-acoustic waves)
Exact sciences and technology
Ions
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma physics
Velocity distribution
Waves, oscillations, and instabilities in plasmas and intense beams
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Summary:The influence of non-thermal ions on linear dust-acoustic waves is studied in an unmagnetized plasma consisting of ions which have a non-thermal velocity distribution, Boltzmann-distributed electrons and streaming dust particles. A detailed examination is conducted of the dependence of the real frequency and growth rate of the excited instability on the dust drift speed, temperature, particle densities and the parameter $\alpha$ that determines the non-thermal nature of the energetic ions. Comparisons with approximate analytical solutions are also made.
ISSN:0022-3778
1469-7807
DOI:10.1017/S0022377804002971