Interaction of solitary waves in magnetized warm dusty plasmas with dust charging effects

In consideration of adiabatic dust charge variation, thecombined effect of the external magnetized field and the dusttemperature on head-on collision of the three-dimensional dustacoustic solitary waves is investigated. By using the extendedPoincar'e--Lighthill--Kuo method, the phase shifts and thetrajectories of two solitons after the collision are obtained. Theeffects of the magnitude and the obliqueness of the externalmagnetic field and the dust temperature on thesolitary wave collisions are discussed in detail.