Sona Bansal

Punjab Technical University

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Tarsem Singh Gill

Guru Nanak Dev University

Munish Aggarwal

DAV University

Sonal Singhal

Panjab University

Santosh Bhukal

University of Science and Technology

R. Godang

University of South Alabama

L. Andricek

Max Planck Institute for Physics

T. Bilka

K. Lieret

M. Bertemes

G. Batignani

Istituto Nazionale di Fisica Nucleare, Sezione di Pisa

Cooperative Institutions

Campbell Collaboration

University of the Basque Country

Centre National de la Recherche Scientifique

University of Bonn

Chonnam National University

Korea Institute of Science & Technology Information

Institute of High Energy Physics

University of Cincinnati

High Energy Accelerator Research Organization

Duke University

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Obliquely Propagating Electron Acoustic Shock Waves in Magnetized Plasma

Brazilian Journal of Physics (2018)

Sona Bansal Munish Aggarwal Tarsem Singh Gill

Ion acoustic wave

10.1007/s13538-018-0609-1

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Citations (7)

Head on collision of ion - acoustic shock waves in weakly relativistic electron-positron-ion quantum plasma

Chinese Journal of Physics (2024)

Sona Bansal Tarsem Singh Gill

10.1016/j.cjph.2022.12.003

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Citations (0)

Evolution of cylindrical/spherical shock formation in a dusty plasma with nonadiabatic dust charge variation

Waves in Random and Complex Media (2022)

Sona Bansal Tarsem Singh Gill

Cylindrical/spherical dust acoustic shock waves are studied in an unmagnetized plasma consisting of Maxwellian electrons, superthermal ions under the effect of nonadiabatic dust charge fluctuation. The dissipation is introduced in the system via nonadiabaticity, a new mechanism for the formation of shock waves. Using standard reductive perturbation method, nonplanar equation namely Korteweg–de Vries Burgers (KdVB) equation is derived and solution is obtained using the Weighted residual method. By use of weighted residual method, a progressive wave solution to nonplanar modified KdV Burgers equation is presented. It is shown that dust charge fluctuation produces dissipation which is responsible for shock formation. The solution shows that as one goes towards the axis of the cylinder or center of the sphere, the wave attenuates faster and the effects are shown in some 2D figures. We have studied various parametric influences on such shock structure and also showed how the gradual variations of these parameter affect the generation and structure of the shocks in their respective domain. Our results should be applicable to the formation of nonlinear DIA shock wave structures in regions in which dust grain is embedded in a Kappa distributed plasma, such as Saturn's magnetosphere.

Dusty plasma

10.1080/17455030.2022.2027552

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Citations (3)

Theoretical analysis of planar and non‐planar electron ‐ acoustic shock waves in electron‐positron‐ion plasma

Contributions to Plasma Physics (2019)

Sona Bansal Munish Aggarwal Tarsem Singh Gill

The propagation properties of planar and non‐planar electron acoustic shock waves composed of stationary ions, cold electrons, and q‐non‐extensive hot electrons and positrons are studied in unmagnetized electron‐positron‐ion plasma. In this model, the Korteweg‐de Vries Burgers equation is obtained in the planar and non‐planar coordinates. We have investigated the combined action of the dissipation, non‐extensivity, density ratio of hot to cold electrons, concentration of positrons, and temperature difference of cold electrons, hot electrons, and positrons. It was found that the amplitude of shock wave in e‐p‐i plasma increases when the positron concentration and temperature increase. The same effect is observed in the case of kinematic viscosity η . Furthermore, it is noticed that spherical wave moves faster in comparison to the shock waves in cylindrical geometry. This difference arises due to the presence of the geometry term m /2 τ . It should be noted that the contribution of the geometry factor comes through the continuity equation. Results of our work may be helpful to illustrate the different properties of shock wave features in different astrophysical and space environments like supernova, polar regions, and in the vicinity of black holes.

Ion acoustic wave

10.1002/ctpp.201900019

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Citations (2)

Structural, electrical, optical and magnetic properties of chromium substituted Co–Zn nanoferrites Co0.6Zn0.4CrxFe2−xO4 (0⩽x⩽1.0) prepared via sol–gel auto-combustion method

Journal of Molecular Structure (2011)

Santosh Bhukal Tsering Namgyal S. Mor Sona Bansal Sonal Singhal

Ionic radius

Lattice constant

Powder Diffraction

10.1016/j.molstruc.2011.12.019

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Citations (81)

Non-planar electron-acoustic waves with hybrid Cairns–Tsallis distribution

Pramana (2019)

Sona Bansal Munish Aggarwal

Electron temperature

Dispersion relation

10.1007/s12043-018-1713-z

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Citations (9)

Planar and Nonplanar Electron-Acoustic Solitary Waves in the Presence of Positrons

Plasma Physics Reports (2020)

Sona Bansal Munish Aggarwal Tarsem Singh Gill

10.1134/s1063780x20070028

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Citations (4)

Collisionless damping of nonplanar dust acoustic waves due to dust charge fluctuation in nonextensive polarized plasma

Physica Scripta (2021)

Tarsem Singh Gill Sona Bansal

Abstract A rigorous theoretical investigation has been made of the cylindrical/spherical dust acoustic waves in collisionless dusty plasma with variable charges under the influence of polarization force by reductive perturbation method. It is shown that the collisionless damping due to dust charge fluctuation causes the dust acoustic wave propagation to be described by the nonplanar damped Korteweg–de Vries equation. By use of weighted residual method, a progressive wave solution to nonplanar damped KdV equation is presented for the first time. It is shown that dust charge fluctuation produce damping which is responsible for wave attenuation. The solution shows that as one goes towards the axis of the cylinder or centre of the sphere, the wave attenuates faster and the effects are shown in some 2D figures. Within a small amplitude limit, the influence of dust charge fluctuation, polarisation power, nonextensivity and ion temperature on the time evolution of dust acoustic solitons is also demonstrated. In laboratory experiments and space regions, findings obtained here may shed light on the salient characteristics of DA waves.

Dusty plasma

10.1088/1402-4896/abfa40

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Citations (9)

Oblique modulation of electron acoustic waves in nonextensive plasma

Physics of Plasmas (2019)

Sona Bansal Tarsem Singh Gill Munish Aggarwal

In this paper, we have studied the oblique modulation of electron acoustic (EA) waves and formation and properties of envelope solitons in three component plasma consisting of cold electrons, nonextensive hot electrons, and stationary ions. To study the stability criteria of waves, the nonlinear Schrödinger equation (NLSE) is derived. The numerical calculations of the NLSE show the variation of the stability region with different plasma parameters. It reveals that the stability criteria of EA waves depend on the modulation angle θ. The effect of nonextensive parameter q and electron temperature ratio σ on the formation of EA wave envelope excitations has been studied in detail, and the findings obtained here will be beneficial for further astrophysical investigations.

Envelope (radar)

Modulation (music)

Ion acoustic wave

Electron temperature

10.1063/1.5094245

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Citations (7)

Study of obliquely propagating electron acoustic shock waves with non-extensive electron population

Plasma Science and Technology (2018)

Sona Bansal Munish Aggarwal Tarsem Singh Gill

Obliquely propagating electron acoustic shock waves in magnetized plasma composed of stationary ions, cold and non-extensive hot electrons are investigated by deriving Korteweg–de Vries Burgers (KdVB) equation. The tangent hyperbolic method is used to solve the KdVB equation in dissipative medium. The dissipation effect is introduced in the model by means of kinematic viscosity term. The analytical calculations of the KdVB equation shows that the structures (amplitude, velocity and width) of the shock waves are modified significantly with kinematic viscosity (η0), obliqueness (kz) and magnetic field (ωc). Since plasmas are ubiquitously permeated with magnetic field, it is pertinent to explore the characteristics of KdVB equation in a magnetized plasmas.

10.1088/2058-6272/aaead8

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Citations (7)