Electrostatic solitary structures in a four-component adiabatic dusty plasma

Abstract

A theoretical investigation has been made of propagating electrostatic waves in a four-component adiabatic dusty plasma, whose constituents are adiabatic electrons, adiabatic ions, adiabatic positively and as well as negatively charged warm dust. The basic features of the solitary structures in such a four-component adiabatic dusty plasma are studied by the reductive perturbation method. It is found that the presence of the positive dust component does not only significantly modify the basic properties of the solitary waves, but also causes the existence of the positive solitary potential structures, which is an interesting feature shown in an adiabatic dusty plasma with the dust of opposite polarity. It is also observed that the basic properties (polarity, speed, amplitude and width) of the DA SWs are significantly modified by the effects of adiabaticity (γ > 1) of electrons, ions, negatively as well as positively charged warm dust. The present investigation can be of relevance to the electrostatic solitary structures observed in various dusty space plasma environments (viz. cometary tails, upper mesosphere, Jupiter's magnetosphere, etc.).

Multi-dimensional instability of dust-acoustic solitary waves in a magnetized plasma with opposite polarity dust

“…[33][34][35][36] It is not possible to go to our model from the previous models. 39,46,52 But, it is very easy to return to the previous works from our work. Therefore, our present model is more accurate and realistic than the previous models of fourcomponent dusty plasmas.…”

“…Rahman et al 38 have generalized the model of Mamun and Shukla 37 by considering a four-component dusty plasma containing negatively and positively charged dust particles, ions, and electrons, and investigated the possibility of the formation of shock structures. Tasnim et al 39 have considered a four-component dusty plasma, and investigated the basic properties of finite amplitude DA SWs by the reductive perturbation method. However, all of these works 37,39 are valid for an unmagnetized plasma.…”

“…Tasnim et al 39 have considered a four-component dusty plasma, and investigated the basic properties of finite amplitude DA SWs by the reductive perturbation method. However, all of these works 37,39 are valid for an unmagnetized plasma. But, it is well known that the effect of external magnetic field drastically modifies the basic properties of electrostatic solitary structures.…”

Nonlinear Waves in Nonuniform Complex Astrocloud

“…The evolutionary dynamics of wave-kinetic phenomena in diverse plasmas, dominated in majority by massive dust grains, has been a significantly emerging area of growing research interest for the last few decades [1][2][3][4][5][6][7][8][9][10][11][12][13]. The grains play an important role in the evolutionary mechanism of various collective waves, instabilities and fluctuations in laboratory, space, and in many astrophysical environments.…”

Dust-acoustic solitary waves in a dusty plasma with dust of opposite polarity and vortex-like ion distribution

“…The charging of dust grains occurs due to a variety of processes (Whipple 1981;Merlino et al 1998). Dust grains of different sizes can acquire different polarities; large grains become negatively charged and small ones become positively charged (Horanyi and Mendis 1986;Mendis and Rosenberg 1994;Shukla and Mamun 2002;Tasnim et al 2012). Positively charged dust particles have been observed in different regions of space, viz.…”