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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.50 [2012] >
IJPAP Vol.50(02) [February 2012] >
| Title: | Arbitrary amplitude dust ion acoustic solitary waves and double layers in a plasma with non-thermal electrons |
| Authors: | Gogoi, Runmoni
Roychoudhury, Rajkumar
Khan, Manoranjan |
| Keywords: | Non-Thermal Electron
Sagdeev Potential
Solitary Wave
Double Layers |
| Issue Date: | Feb-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Sagdeev’s pseudo potential method is employed to
study dust ion-acoustic solitary waves in an unmagnetized plasma with
non-thermal electrons. An exact analytical expression is obtained for the pseudo
potential. The range of parameters for the existence of solitary
waves and double layers using the analytical expression of the Sagdeev
potential has been found. It is observed that, depending on the values of
the plasma parameters like ion temperature  , non-thermal electron
parameter  and the
value of the dust grain charge µZd, both rarefactive and
compressive solitary waves may exist. Critical values of these parameters,
beyond which solitary waves would cease to exist, are obtained for some
particular cases. Double layer solutions are also obtained for certain
parametric values. Exact numerical
results are obtained for arbitrary amplitude solitons and double layers. |
| Page(s): | 110-116 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.50(02) [February 2012]
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