Arbitrary amplitude dust kinetic Alfven solitary waves in the presence of polarization force

作者：Singh Manpreet; Kaur Nimardeep; Saini N S^*

来源：Physics of Plasmas, 2018, 25(2): 023705.

DOI：10.1063/1.5009572

In this investigation, the effect of polarization force on dust kinetic Alfven solitary waves (DKASWs) in a magnetized dusty plasma consisting of dust fluid, electrons, and positively charged ions is studied. By incorporating density non-uniformity and polarization force in the fluid model equations, the energy balance equation is derived, and from the expression for Sagdeev pseudopotential, the existence conditions for solitary structures in terms of Mach number are determined. From the numerical analysis of Sagdeev pseudopotential, compressive and rarefactive DKASWs at sub- and super-Alfvenic speeds are observed. These waves are significantly affected by varying polarization force, angle of propagation, plasma beta, and Mach number.

• 出版日期2018-2