Dust-Acoustic Solitary Waves in a Magnetized Dusty Plasma With Ions Of Distinct Temperatures

A theoretical investigation has been made of obliquely propagating electrostatic solitary structures in a magnetized dusty plasma, composed of negatively charged dust, nonthermal ions of distinct temperatures, and Boltzmann distributed electrons. The properties of small but finite amplitude dust-acoustic solitary waves (DASWs) in this dusty plasma system are studied by deriving the Zakharov-Kuznetsov (ZK) equation. It has been inferred that the effects of obliqueness, external magnetic field, nonthermal ions of two distinct temperatures, and Boltzmann electrons cause modification of the characteristics (i.e., amplitude and width) of these solitary structures. The implications of our present investigation in understanding the basic features of nonlinear electrostatic perturbations observed in many space plasma systems and laboratory devices are briefly discussed.