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Solitary Waves in four component Dusty Plasma using Kappa Distribution of Electrons and Ions
(Punjab Agricultural University, Ludhiana, 2017) Amanpreet Kaur; Parveen Bala
Dusty plasma plays important role in space, astrophysical and laboratory environment. The presence of charged dust particles along with other particles in plasma creates solitary waves. An unmagnetized dusty plasma consisting of positively charged dust, negatively charged dust, kappa distributed electrons and ions is considered. The K-dV equation for solitary waves in such plasma system is derived using reductive perturbation method. This K-dV equation describes the solitary waves in dusty plasma and gives the nonlinearity and dispersion effects in such dusty plasma system. The soliton solution is found for the K-dV equation which is of the sech2 form. Both compressive and rarefactive solutions are found in fast and slow modes. The effects of the dusty plasma parameters and kappa parameters on the dynamics of these solitons in both modes are discussed numerically. The kappa distribution has only a quantitative, not a qualitative effect on the existence of solitary waves. The results which, have been obtained from this investigation, would be useful in understanding the properties of nonlinear solitary waves in laboratory and in space dusty plasmas.