Regular Article

Nonlinear ion acoustic waves in a relativistic degenerate plasma with Landau diamagnetism and electron trapping

¹ Department of Physics, Government College University, Lahore 54000, Pakistan
² COMSATS Institute of Information Technology, Park Road, Chak Shahzad, Islamabad, Pakistan
³ National Centre for Physics, Shahdara Valley Road, Islamabad, Pakistan
⁴ Faculty of Exact and Natural Sciences, Andronikashvili Institute of Physics, Tbilisi State University, Tbilisi 0128, Georgia

^a e-mail: hashah.gcl@gmail.com

Received: 26 June 2018
Received in final form: 10 August 2018
Published online: 8 November 2018

Abstract

We consider the effects of trapping in a relativistic degenerate plasma with quantizing magnetic field. The linear dispersion relation for such an ion acoustic wave is derived and the propagation characteristics of these waves are discussed. The Sagdeev potential for the formation of arbitrary amplitude solitary structures is obtained and it is seen that only compressive solitary structures are formed for the relativistic degenerate quantized magnetoplasma. The dependence of the linear and nonlinear propagation characteristics of ion acoustic waves on different plasma parameters is explored. A comparison is also made with the previous studies. The useful applications of the present investigation in dense astrophysical environments like white dwarf stars and neutron stars, in semiconductor physics, in high-energy density physics, in inertial confinement fusion and in next generation laser–plasma interaction experiments are pointed out.