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Arbitrary amplitude dust-acoustic double layers in a non-thermal plasma

Published online by Cambridge University Press:  25 November 2005

S. K. MAHARAJ ,
S. R. PILLAY ,
R. BHARUTHRAM ,
R. V. REDDY ,
S. V. SINGH  and
G. S. LAKHINA
S. K. MAHARAJ
Affiliation:
Hermanus Magnetic Observatory, Hermanus, 7200, South Africa
S. R. PILLAY
Affiliation:
University of KwaZulu-Natal, Durban, 4000, South Africa (bharuthramr@ukzn.ac.za)
R. BHARUTHRAM
Affiliation:
University of KwaZulu-Natal, Durban, 4000, South Africa (bharuthramr@ukzn.ac.za)
R. V. REDDY
Affiliation:
Indian Institute of Geomagnetism, Plot No. 5, Sector-18, New Panvel (W), Navi Mumbai, 410218, India
S. V. SINGH
Affiliation:
Indian Institute of Geomagnetism, Plot No. 5, Sector-18, New Panvel (W), Navi Mumbai, 410218, India
G. S. LAKHINA
Affiliation:
Indian Institute of Geomagnetism, Plot No. 5, Sector-18, New Panvel (W), Navi Mumbai, 410218, India
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Abstract

The existence of large-amplitude dust-acoustic double layers is investigated in an unmagnetized dusty plasma comprising a negatively charged warm dust fluid, non-thermal ions and Boltzmann electrons. It is found that the non-thermal plasma supports the existence of rarefactive double layers only. The dependence of the double-layer amplitude and Mach number on various parameters such as the non-thermal parameter, dust temperature and electron concentration is numerically examined.

Type
Papers
Information
Journal of Plasma Physics , Volume 72 , Issue 1 , February 2006 , pp. 43 - 58
Copyright
2005 Cambridge University Press

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