Nonlinear dust acoustic and dust kinetic Alfvén waves

Nonlinear dynamics of dust acoustic and dust kinetic Alfvén waves in dusty plasmas is studied. The limits of plasma beta in dusty plasmas for the coupled perturbation is discussed for two component dust-ion and three component dust-ion-electron plasmas. Localized nonlinear structures are investigated in different limits of plasma beta and numerical results are presented. It is found that increase in beta values plays destructive role for solitons formed in both two and three component dusty plasmas. It is also noticed that the amplitude of the soliton reduces in three component dusty plasma as compared to two component dusty plasma. The application to space dusty plasma is pointed out.