Balwinder Chahal - Academia.edu (original) (raw)

Papers by Balwinder Chahal

Research paper thumbnail of Dust ion acoustic freak waves in a plasma with two temperature electrons featuring Tsallis distribution

Physica A: Statistical Mechanics and its Applications

Research paper thumbnail of Solitary Structures In Dusty Plasma Consisting Of Negative Ions And Kappa Electrons

ABSTRACT In this investigation, we have studied the large amplitude solitary structures in a dust... more ABSTRACT In this investigation, we have studied the large amplitude solitary structures in a dusty plasmas made up of negative ions, positive ions, stationary dust and Kappa electrons. We have observed that the opposite polarity solitary potential structures exist.

Research paper thumbnail of Large-amplitude dust-ion acoustic solitary waves in a dusty plasma with nonthermal electrons

Astrophysics and Space Science, 2012

Propagation regimes of large-amplitude dust-ion acoustic solitary wave in a dusty plasma with non... more Propagation regimes of large-amplitude dust-ion acoustic solitary wave in a dusty plasma with nonthermal electrons are analyzed by employing the Sagdeev potential technique. Two domains of the Mach numbers are defined depending on the nonthermal and plasma parameters. The two types of soliton solution are found to be exited corresponding to certain values of the nonthermal parameter. Numerical solutions are presented that illustrate the dependence of soliton characteristics on practically interesting plasma and nonthermal parameters. The findings of this investigation could be useful in understanding the detected solitary waves in space plasma in the presence of nonthermal electrons such as electrostatic solitary structures observed in Saturn's E-ring.

Research paper thumbnail of Small amplitude electron-acoustic solitary waves in a plasma with superthermal hot electrons

Astrophysics and Space Science, 2013

ABSTRACT In the present investigation, Electron acoustic solitons in a plasma consisting of cold ... more ABSTRACT In the present investigation, Electron acoustic solitons in a plasma consisting of cold electrons, superthermal hot electrons and stationary ions are studied. The basic properties of small but finite amplitude solitary potential structures that may exist in a given plasma system have been investigated theoretically using reductive perturbation technique. It has been found that the profile of electron acoustic solitary wave structures is very sensitive to relative hot electron density, alpha(=fracnh0nc0)\alpha(=\frac{n_{h0}}{n_{c0}})alpha(=fracnh0nc0) , temperature of hot to cold electrons, theta(=fracThTc)\theta(=\frac{T_{h}}{T_{c}})theta(=fracThTc) and the spectral index κ. The implications of the present study may be applied to explain some features of large amplitude localized structures that may occur in the plasma sheet boundary layer.

Research paper thumbnail of Zakharov-Kuznetsov equation in a magnetized plasma with two temperature superthermal electrons

Physics of Plasmas, 2014

A nonlinear Zakharov-Kuznetsov (ZK) equation for ion-acoustic solitary waves (IASWs) in a magneti... more A nonlinear Zakharov-Kuznetsov (ZK) equation for ion-acoustic solitary waves (IASWs) in a magnetized plasmas containing kappa distributed cold and hot electrons is derived by using reductive perturbation method. From the solution of ZK equation, the characteristics of IASWs have been studied under the influence of various plasma parameters. Existence domain of physical parameters is determined. It has been observed that the present plasma system supports the existence of both positive as well as negative potential solitons. The combined effects of cold to hot electron temperature ratio (r), density ratio of cold electrons to ions (f), superthermality of cold and hot electrons (j c ; j h), strength of magnetic field (via X i), and obliqueness (h) significantly influence the profile of IASWs. The physical parameters play a great role to modify the width and amplitude of the solitary structures. The stability analysis is also presented in this investigation and parametric range is determined to check the presence of stable and unstable solitons. The findings of this study are important to the physics of electrostatic wave structures in the Saturn's magnetosphere where two temperature electrons with kappa distribution exist. V

Research paper thumbnail of Dust ion acoustic freak waves in a plasma with two temperature electrons featuring Tsallis distribution

Physica A: Statistical Mechanics and its Applications

Research paper thumbnail of Solitary Structures In Dusty Plasma Consisting Of Negative Ions And Kappa Electrons

ABSTRACT In this investigation, we have studied the large amplitude solitary structures in a dust... more ABSTRACT In this investigation, we have studied the large amplitude solitary structures in a dusty plasmas made up of negative ions, positive ions, stationary dust and Kappa electrons. We have observed that the opposite polarity solitary potential structures exist.

Research paper thumbnail of Large-amplitude dust-ion acoustic solitary waves in a dusty plasma with nonthermal electrons

Astrophysics and Space Science, 2012

Propagation regimes of large-amplitude dust-ion acoustic solitary wave in a dusty plasma with non... more Propagation regimes of large-amplitude dust-ion acoustic solitary wave in a dusty plasma with nonthermal electrons are analyzed by employing the Sagdeev potential technique. Two domains of the Mach numbers are defined depending on the nonthermal and plasma parameters. The two types of soliton solution are found to be exited corresponding to certain values of the nonthermal parameter. Numerical solutions are presented that illustrate the dependence of soliton characteristics on practically interesting plasma and nonthermal parameters. The findings of this investigation could be useful in understanding the detected solitary waves in space plasma in the presence of nonthermal electrons such as electrostatic solitary structures observed in Saturn's E-ring.

Research paper thumbnail of Small amplitude electron-acoustic solitary waves in a plasma with superthermal hot electrons

Astrophysics and Space Science, 2013

ABSTRACT In the present investigation, Electron acoustic solitons in a plasma consisting of cold ... more ABSTRACT In the present investigation, Electron acoustic solitons in a plasma consisting of cold electrons, superthermal hot electrons and stationary ions are studied. The basic properties of small but finite amplitude solitary potential structures that may exist in a given plasma system have been investigated theoretically using reductive perturbation technique. It has been found that the profile of electron acoustic solitary wave structures is very sensitive to relative hot electron density, alpha(=fracnh0nc0)\alpha(=\frac{n_{h0}}{n_{c0}})alpha(=fracnh0nc0) , temperature of hot to cold electrons, theta(=fracThTc)\theta(=\frac{T_{h}}{T_{c}})theta(=fracThTc) and the spectral index κ. The implications of the present study may be applied to explain some features of large amplitude localized structures that may occur in the plasma sheet boundary layer.

Research paper thumbnail of Zakharov-Kuznetsov equation in a magnetized plasma with two temperature superthermal electrons

Physics of Plasmas, 2014

A nonlinear Zakharov-Kuznetsov (ZK) equation for ion-acoustic solitary waves (IASWs) in a magneti... more A nonlinear Zakharov-Kuznetsov (ZK) equation for ion-acoustic solitary waves (IASWs) in a magnetized plasmas containing kappa distributed cold and hot electrons is derived by using reductive perturbation method. From the solution of ZK equation, the characteristics of IASWs have been studied under the influence of various plasma parameters. Existence domain of physical parameters is determined. It has been observed that the present plasma system supports the existence of both positive as well as negative potential solitons. The combined effects of cold to hot electron temperature ratio (r), density ratio of cold electrons to ions (f), superthermality of cold and hot electrons (j c ; j h), strength of magnetic field (via X i), and obliqueness (h) significantly influence the profile of IASWs. The physical parameters play a great role to modify the width and amplitude of the solitary structures. The stability analysis is also presented in this investigation and parametric range is determined to check the presence of stable and unstable solitons. The findings of this study are important to the physics of electrostatic wave structures in the Saturn's magnetosphere where two temperature electrons with kappa distribution exist. V