Dynamics of ion acoustic double layers in a magnetized two-population electrons plasma

The obliquely propagating ion acoustic (IA) double-layers are investigated in a magnetized two population electron plasmas. The extended Korteweg-de Vries equation is derived by using the reductive perturbation technique. The effect of obliqueness (l(z)) and magnitude of the external magnetic field (omega(ci)), as well as the electron number density (beta) on the double-layer profile, is studied, and then the ranges of parameters for which the double-layers exist are investigated in detail. We found that the combined effects of l(z), omega(ci), and beta significantly modify the basic properties (viz. amplitude and width) of the IA double-layers. (C) 2013 AIP Publishing LLC.