On dust ion acoustic solitary waves in collisional dusty plasmas with ionization effect

Abstract

The propagation of solitary waves in an unmagnetized collisional dusty plasma consisting of a negatively charged dust fluid, positively charged ions, isothermal electrons, and background neutral particles is studied. The ionization, ion loss, ion-neutral, ion-dust, and dust-neutral collisions are considered. Applying a reductive perturbation theory, a damped Korteweg-de Vries (DKdV) equation is derived. On the other hand, at a critical phase velocity, the dynamics of solitary waves is governed by a damped modified Korteweg-de Vries (DMKdV) equation. The nonlinear properties of solitary waves in the two cases are discussed.

Nonplanar dust ion-acoustic solitary and shock excitations in electronegative plasmas with trapped electrons

“…Recently, Mamun et al (2009aMamun et al ( , 2009b have investigated the properties of solitary waves and double layers in an electronegative dusty plasma in a planar geometry, and compared the results with experiment of Ghim and Hershkowitz (2009). Many authors have been investigated the nonlinear wave behavior in multicomponent plasmas (see e.g., El-Labany et al 2008Kalita and Barman 2010;Shalaby et al 2010;Tribeche and Benzekka 2011;Alinejad 2011;El-Shewy et al 2011;Pakzad 2011;Sabry et al 2011;Elwakil et al 2011). However, to the authors' knowledge, the study of nonplanar three-dimensional pulses (solitary and shock pulses) in multicomponent (positive-negative) trapped plasmas with stationary positively/negatively charged dust impurities has not been examined so far, which is the aim of the present work.…”

Interaction of ion beam with dust grains produces dust-acoustic solitary waves in Herbig-Haro objects

“…Also, the amplitudes of the dust solitary waves become smaller and the Mach number regime is extended wider for the variable dust charge situation compared to the constant dust charge situation. Later, there has been a surge in investigating numerous properties of the DAWs (see e.g., Ali et al 2008aAli et al , 2008bMamun et al 2009aMamun et al , 2009bSayed et al 2008;Tribeche et al 2004Tribeche et al , 2008Benzekka 2009, 2011;Shalaby et al 2010;El-Shewy et al 2011;Pakzad 2011;Elwakil et al 2011;Fedila and Djebli 2010;Marif and Djebli 2011).…”

Head—on collision of nonlinear dust—acoustic solitary waves in dusty plasmas with dust of opposite polarities

“…In the last years, the investigation of nonlinear waves and structures in dusty plasmas (fully or partially ionized low temperature gases comprising of neutral gas molecules, electrons, ions, and submicron-and micron-sized charged dust grains) has become one of the most important activities of plasma physics because of their vital role in the study of the astrophysical and space environment (Horányi et al 1993;Mendis and Rosenberg 1994;Havnes et al 1996;Mamun 1999;El-Labany et al 2002, 2008, 2009Shalaby et al 2010), as well as in the laboratory (Barkan and Merlino 1995;Barkan et al 1996). The presence of charged dust grains in plasma can modify the collective behavior of a plasma, as well as excite new modes and new nonlinear phenomena, such as dustion-acoustic solitary waves (DIASWs), dust-acoustic solitary waves (DASWs), dust lattice waves (DLWs), etc.…”