Eur. Phys. J. Plus (2017) 132: 210
https://doi.org/10.1140/epjp/i2017-11489-5

Regular Article

Effect of degeneracy temperature on drift solitary structures in a nonuniform degenerate plasma

¹ CeFEMA, Instituto Superior Tecnico, Universidade de Lisboa, Lisboa, Portugal
² University of Engineering and Technology, (RCET Campus), Lahore, Pakistan

^* e-mail: muzzamalshaukat@gmail.com

Received: 4 December 2016
Accepted: 4 April 2017
Published online: 9 May 2017

Abstract

Linear and nonlinear propagation of quantum drift ion acoustic waves have been studied in a spatially inhomogeneous degenerate quantum plasma taking into account the effect of electron trapping. The linear dispersion relation has been derived in this regard in a 2D quantum magnetoplasma with trapped electrons and a significant amendment in the linear propagation characteristics of the wave under consideration has been observed due to the degeneracy temperature. The drift ion solitary structures have been investigated in 1D and 2D by employing the drift approximation. We obtained the compressive drift solitary structures which are analyzed numerically for the parameters, such as degeneracy temperature, typically found in white dwarfs.