Formation of dust ion-acoustic solitary waves in a dusty plasma with two-temperature trapped electrons

Abstract

Formation of large amplitude dust ion-acoustic (DIA) solitary waves are investigated in a multicomponent dusty plasma whose constituents are warm ions, twotemperature trapped electrons and negatively charged dust grains. The fluid dynamical system of equations governing the dynamics of DIA waves is reduced to a pseudo energybalance equation. The existence and basic properties of arbitrary amplitude DIA solitary waves are thus investigated via a Sagdeev potential approach. It is shown that the solitary structures are significantly affected by low-and hightemperature trapped electrons, as well as by ion temperature. It is also found that only positive potential DIA solitary structures are observed in such a plasma.

On existence conditions of dust-acoustic solitary waves in a plasma with positively charged dust

“…The existence of solitary structures for a specific physical model depends particularly on some physical parameters such as density and temperature (Alinejad 2011b). As pointed out by Verheest et al, it is important to address the problem in a way which is physically transparent before generating correct Sagdeev pseudopotential graphs based on numerical tests, which offer no real insight into why limitations occur (Verheest and Hellberg 2008).…”

Nonextensive collisioneless dust-acoustic shock waves in a charge varying dusty plasma

“…Dust grains become charged due to different processes, such as collection of charged particles from the surrounding plasma, photoionization, secondary electron emission, sputtering by energetic ions, etc. There has been a great deal of interest in understanding different types of collective processes in dusty plasmas (Goertz 1989;Mendis and Rosenberg 1994;Horanyi 1996;Lin and Zhang 2007;Mamun and Cairns 2009;Pakzad 2009Pakzad , 2010Alinejad 2010Alinejad , 2011aAlinejad , 2011bAlinejad , 2011cShalaby et al 2010;Barman and Talukdar 2011;Eslami et al 2011;Mayout and Tribeche 2011;Tribeche and Benzekka 2011). It has been shown both theoretically and experimentally that the presence of extremely massive and highly charged dust grains in a plasma can either modify the behavior of the usual waves and instabilities or introduce new eigenmodes.…”

Nonextensive dust acoustic waves in a charge varying dusty plasma

“…Dust grains become charged due to different processes, such as collection of charged particles from the surrounding plasma, photoionization, secondary electron emission, sputtering by energetic ions, etc. There has been a great deal of interest in understanding different types of collective processes in dusty plasmas (Goertz 1989;Mendis and Rosenberg 1994;Horanyi 1996;Alinejad 2010;Alinejad 2011aAlinejad , 2011bAlinejad , 2011cBarman and Talukdar 2011;El-Labany et al 2010;Eslami et al 2011;Mayout and Tribeche 2011;Pakzad 2009;Pakzad 2010;Rahman et al 2011;Shalaby et al 2010;Tribeche and Benzekka 2011). It has been shown both theoretically and experimentally that the presence of extremely massive and highly charged dust grains in a plasma can either modify the behavior of the usual waves and instabilities or introduce new eigenmodes.…”