Study of ion-acoustic rarefactive soliton in a two-electron temperature plasma

Abstract

The propagation characteristics of ion-acoustic rarefactive soliton (IARS) in a two-electron temperature plasma with two cold ion species are investigated considering the nonisothermal distributions of electrons using a kinetic model and fluid model for both ion species. Using the Sagdeev potential formalism the nonlinear dispersion relation and expression for width are derived for IARS. The variation of Mach number and width of the IARS with the amplitude is studied numerically and compared with earlier theoretical results as well as experimental observations. It is found that the results are improved qualitatively as well as quantitatively with the consideration of the presence of a suitable negative ion-impurity.

Ion acoustic solitary waves and double layers in a plasma with two temperature electrons featuring Tsallis distribution

“…During the last three decades, a large number of investigations to study the propagation properties of ion acoustic solitary waves in two temperature electrons plasmas have been reported. [19][20][21][22][23][24] The experimental observations of ion acoustic waves in two temperature electrons plasmas were reported by Jones et al 19 Goswami and Buti 20 studied the characteristics of IA solitary waves of a two temperature electrons plasma in the framework of Sagdeev pseudopotential method and derived an energy integral equation. The existence conditions of solitary structures were also determined.…”

Ion-acoustic supersolitons in the presence of non-thermal electrons

“…(9) and (10), respectively for the chosen set of parameters: f = 0.01, s ¼ 0:09 and a = 0.01 for various values of Mach number, M. These representative plasma parameters are taken from Baluku et al [19] and Verheest et al [24]. It can be seen from the graph (see Fig.…”

“…It was shown that these nonlinear structures could be either rarefactive double layers or rarefactive or compressive solitons. The propagation characteristics of ion-acoustic rarefactive soliton in a two electron temperature unmagnetized plasma with two cold ions have been studied by Sayal et al [9]. They used the kinetic and fluid models for both the ion species.…”

Effect of nonextensivity on the characteristics of supersolitons in a two‐temperature electron plasma

“…[42] Existence of two-temperature electrons is very common in both laboratory [43][44][45] and space plasmas. [38,[46][47][48][49][50][51][52] Study of ion-acoustic solitons and double layers in two-temperature electron plasmas is not new in the space environment. [45][46][47][48][49][50][51][52] The small-amplitude reductive perturbation method was considered by a number of authors to study nonlinear periodic waves in the auroral plasmas.…”

“…[38,[46][47][48][49][50][51][52] Study of ion-acoustic solitons and double layers in two-temperature electron plasmas is not new in the space environment. [45][46][47][48][49][50][51][52] The small-amplitude reductive perturbation method was considered by a number of authors to study nonlinear periodic waves in the auroral plasmas. [49,53] Some studies [51,54] have already confirmed that the weakly nonlinear theory is not an appropriate choice to describe these structures in the auroral regions.…”