- Dust and Plasma Wave Phenomena
- Ionosphere and magnetosphere dynamics
- Earthquake Detection and Analysis
- Nonlinear Waves and Solitons
- Cold Atom Physics and Bose-Einstein Condensates
- Magnetic confinement fusion research
- Optical properties and cooling technologies in crystalline materials
- Advanced Fiber Laser Technologies
- High-pressure geophysics and materials
- Stellar, planetary, and galactic studies
- Plasma Diagnostics and Applications
- Astronomy and Astrophysical Research
- Nonlinear Photonic Systems
- Laser-Plasma Interactions and Diagnostics
- Radio Wave Propagation Studies
- Laser-induced spectroscopy and plasma
- Astrophysics and Star Formation Studies
- Geophysics and Gravity Measurements
- Solar and Space Plasma Dynamics
- Astro and Planetary Science
- Fluid Dynamics and Turbulent Flows
- Geophysics and Sensor Technology
- Millimeter-Wave Propagation and Modeling
- Target Tracking and Data Fusion in Sensor Networks
- Astronomical Observations and Instrumentation
Centre for Interdisciplinary Research and Education
2019-2023
Jadavpur University
2001-2023
University of Calcutta
2012
Serampore College
1992-2005
Inter-University Centre for Astronomy and Astrophysics
1999-2003
National Agency for New Technologies, Energy and Sustainable Economic Development
1994
Oak Ridge National Laboratory
1994
This is a sequel to our earlier study on ion-acoustic waves studied through the augmentation modified Korteweg–deVries (K–dV) equation. We have derived K–dV equation in plasma, taking account of weakly relativistic effects, and result shows that solitary wave does exhibit effect presence ion streaming.
Using the one dimensional quantum hydrodynamic model for a two-component electron-ion dense plasma linear and nonlinear properties of electron waves are studied including ion motion. By using standard method multiple scales perturbation technique Schrödinger equation containing effects is derived. From this it shown that with immobile ions an wave becomes modulationally unstable in two distinct regions wavenumber. Numerical calculation shows stability domain wavevector shrinks increase...
Propagation of ion-acoustic waves in a multicomponent plasma consisting warm positive ions with stream velocity and two-temperature electrons has been theoretically investigated. New analytical solutions sufficient necessary conditions are obtained for the existence solitary plasma. It is seen that drifting two temperature have key roles on formation The critical values ion phase numerically estimated, which would be applicable to various physical situations.
As a continuation of our earlier work, we have analysed the higher-order perturbative corrections to formation (ion-acoustic) solitary waves in relativistic plasma. It is found that considerations affect amplitude and width variation - as conjectured previous paper. Our analysis employs singular perturbation technique, with elimination secular terms stages. In this way arrive at an inhomogeneous KdV-type equation, which then solved exactly. At point new phenomena arises critical value phase...
Using the reductive perturbation method a theoretical infrastructure has been developed to study nonlinear propagation of ion-acoustic waves in self-gravitating multicomponent dusty plasma consisting positive ions, non-isothermal electrons and negatively charged warm dust particles with uctuating charges drifting motion.It is shown that instead coupled equations as obtained by earlier authors such can be described an uncoupled third order partial dierential equation which modied form...
Abstract Nonlinear propagation of ion acoustic waves has been studied in unmagnetized quantum (degenerate) plasma the presence an beam using one-dimensional hydrodynamic model. The Korteweg–de Vries (K–dV) equation derived by reductive perturbation technique. solution solitary is obtained from K–dV equation. theoretical results have analyzed numerically for different values parameters and are presented graphically. It seen that formation structure significantly affected plasma. will be...
We have considered the effect due to presence of two-temperature electrons on formation and propagation cnoidal waves in a weak relativistic plasma. Since wave is equivalent an infinite series solitary waves, it worthy study for situation where more than one important. The phase velocity modulated periodic plotted as function amplitude. form small values ellipticity shows up harmonics. Such excitations are important determining anomalous transport coefficients
Propagation of a surface wave in semi-infinite magnetized dusty plasma is analyzed by taking into account the dust-charge fluctuation and assuming that magnetic field weak. The dispersion relation deduced to show existence modified low frequency mode, which reduces result obtained earlier zero limit. two different cases electrostatic electromagnetic mode are discussed separately. Last, numerical estimates attenuation coefficient as function for its various range values have been done...
Higher-order nonlinear and dispersive effects on ion-acoustic solitons in a plasma consisting of two types cold positive ions two-temperature non-isothermal electrons are studied using reductive perturbation method. An integrated form the basic sets fluid equations is derived terms pseudo-potential. A solution this equation obtained by Bogoliubov–Mitropolsky At lowest order, we obtain modified Korteweg–de Vries solitary-wave solution, which has sech 4 profile. Calculations carried out at...