Phase shifts of magneto-acoustic solitons in spin-1/2 fermionic quantum plasma during head-on collision

Abstract

The head-on collision between two magneto-acoustic solitons in spin-1/2 fermionic quantum plasma is studied in the framework of the model proposed by Marklund et al. (Marklund, M., Eliasson, B. and Shukla, P. K. 2007 Phys. Rev. E. 76, 067401). The extended Poincare–Lighthill–Kuo method is used to obtain the phase shifts and the trajectories during the head-on collision of two solitons. The effect of the Zeeman energy for different speeds of the waves, the effect of the total mass density of the charged plasma particles for different strengths of magnetic field, the effect of the speed of the wave for different values of the Zeeman energy, and that of the ratio of the sound speed to Alfven speed for different values of Zeeman energ on the phase shift are studied. It is observed that the phase shifts are significantly affected in all the cases. The most interesting observation of this paper is that the phase shifts increase as well as decrease, and also they may be positive as well as negative depending upon the domain of the chosen parameters.

Ion acoustic solitons collision in spin-polarized relativistic quantum plasma

“…The head-on collision of ion-acoustic solitary waves in plasma with nonextensive distributed electrons is examined in [38], they found that the nonextensive distribution electrons important role in the properties of ion-acoustic solitary waves collision. A recent study has investigated the collision of ions acoustic solitary waves in various plasma environments see in [39][40][41][42]. The ion collisions in plasma have already been established experimentally.…”