(Senior Professor) Institute For Plasma Research Bhat Gandhinagar -382428 Gujarat, India Contact:- +917923964078 Fax:- +917923962277 |

Reserach Interest

- Nonlinear and turbulent phenomena in laboratory, astrophysical and fusion plasmas.
- Laser Plasma interaction: Applications - medical, security etc., fundamental issues - QED and radiation reaction effects in collective plasma environment.
- Dusty plasmas as strongly coupled state of matter, interdisciplinary connections with condensed matter, visco-elastic fluid systems, behaviour of active matter.

Academics

Degree | Year | University |
---|---|---|

B.Sc. | 1981-1984 | Patna University |

M.Sc. | 1984-1986 | Indian Institute of Technology, Kanpur |

Ph.D. | 1986-1990 | Indian Institute of Technology, Kanpur |

Professional career

Year | Institute | Position |
---|---|---|

1990 -1996 | Institute for Plasma Research (IPR) | Fellow (Scientist SD) |

1996-2002 | Institute for Plasma Research (IPR) | Associate Professor - I |

2002-2008 | Institute for Plasma Research (IPR) | Associate Professor - II |

2008-2010 | Institute for Plasma Research (IPR) | Professor G |

2010-2012 | Institute for Plasma Research (IPR) | Professor H |

2012- present | Institute for Plasma Research (IPR) | Professor H+ |

1998-2002 | Fusion and Astrophysical group, UCSD, California | Visiting Assistant Project Scientist |

Honors

Institute/ Academy/ Society | Award | Year |
---|---|---|

Indian Institute of Technology, Kanpur | Best outgoing M.Sc Physics student | 1986 |

DAE-SRC | Outstanding Research Investigator Award (Study of Plasma Turbulence) |
2005 |

Indian Academy of Sciences | Fellow of Indian Academy of Sciences |
2011 |

Gujarat Science Academy | Fellow of Gujarat science Academy |
2011 |

ICTP | Regular Associate member of ICTP |
2011 |

National Academy of Science India | Fellow of National Academy of Science India |
2015 |

Utkarsh Foundation India | Women Excellence Award (Scientist and Innovator) |
2015 |

Publication

- Energy principle for excitations in plasmas with counterstreaming electron flows,

AIP Advances, 8(5):055213, (2018). - Interplay of single particle and collective response in molecular dynamics simulation of dusty plasma system,

Physics of Plasmas 25, 043705 (2018). - Spiral waves in driven dusty plasma medium: Generalized hydrodynamic fluid description,

Physics of Plasmas 25, 043701 (2018). - Merger and reconnection of Weibel separated relativistic electron beam,

Physics of Plasmas 25, 022123 (2018). - Numerical study of the lateral interactions of two plasma plumes,

Journal of Physics D: Applied Physics, Volume 50, Number 35, (2017). - Overview of recent experimental results from the Aditya tokamak,

Nuclear Fusion, Volume 57, Number 10 (2017). - Observation of 1-D time dependent non-propagating laser plasma structures using fluid and PIC codes,

Physics of Plasmas 24, 123111 (2017). - Observation of enhanced absorption of laser radiation by nanostructured targets in PIC simulations,

Physics of Plasmas 24, 093118 (2017) . - Magnetic turbulence in a table-top laser-plasma relevant to astrophysical scenarios,

Nature Communications 8, Article number: 15970 (2017). - Observation of the Korteweg-de Vries soliton in molecular dynamics simulations of a
dusty plasma medium,

http://aip.scitation.org/doi/10.1063/1.4978779. - Sub- and super-luminar propagation of structures satisfying Poynting-like theorem for incompressible generalized hydrodynamic fluid model depicting strongly coupled dusty plasma medium,

Phys. Plasmas 23(2016). - Two-dimensional studies of relativistic electron beam plasma instabilities in an inhomogeneous plasma,

Physics of Plasmas 22 112118 (2015). - Fluid simulation of relativistic electron beam driven wakefield in a cold plasma,

Phys. of Plasmas 22, 073109 (2015). - 1D3V PIC simulation of propagation of relativistic electron beam in an inhomogeneous plasma,

Physica Scripta 90 085605 (2015). - The first experiments in SST-1,

Nuclear Fusion 55, 104009 (2015). - Collisionless sheath heating in current-driven capacitively coupled plasma discharges via higher order sinusoidal signals,

Plasma Sources Sci. Technol 24 025037 (2015). - Molecular dynamics simulations of soliton like structures in a dusty plasma medium,

Phys. of Plasmas 22, 033706 (2015). - The study of electromagnetic cusp solitons,

Phys. of Plasmas 22, 013101 (2015). - Turbulence in strongly coupled dusty plasmas using generalized hydrodynamic description,

Physics of Plasmas 22, 023710 (2015). - Visco-elastic fluid simulations of coherent structures in strongly coupled dusty plasma medium,

Physics of Plasmas 21, 073705 (2014). - Collective Dynamics in strongly coupled dusty plasma medium,

Journal of Plasma Physics,Volume 80, Issue 6,(2014). - Kelvin-Helmholtz Instability in dusty plasma medium: Fluid and particle approach,

Journal of Plasma Physics, Volume 80, Issue 6,(2014). - Evolution of sheared flow structure in visco-elastic fluids,

AIP Conference Proceedings 1582, 55 (2014). - Suppression of Rayleigh Taylor instability in strongly coupled plasmas,

Phys. Plasmas 21, 062102 (2014). - Kinetic effects on robustness of electron magnetohydrodynamic structures,

Phys. Plasmas 20, 042303 (2013). - Linear and nonlinear studies of velocity shear driven three dimensional electron-magnetohydrodynamics instability,

Phys. Plasmas 19, 072103 (2012). - Numerical Modeling of Plasma Plume Evolution against Ambient Background Gas in Laser Blow Off Experiments,

Phys. Plasmas 19, 073105 (2012). - Nonlinear electron-magnetohydrodynamic simulations of three dimensional current shear instability,

Phys. Plasmas 19, 092305 (2012). - Perturbative analysis of sheared flow Kelvin Helmholtz instability in a weakly relativistic magnetized electron fluid,

Phys. Plasmas 19, 052105 (2012). - Direct Observation of Turbulent Magnetic Fields in Hot, Dense Laser Produced Plasmas,

Proceedings of the National Academy Sciences of the United States of America (PNAS) (2012). - Kelvin-Helmholtz instability in a strongly coupled dusty plasma medium,

Phys. Plasmas 19, 073703 (2012). - Observation of sharply peaked solitons in dusty plasma simulations,

New journal of Physics, Volume 14 (2012). - Kelvin - Helmholtz instability in a weakly coupled dust fluid,

Phys of Plasmas 19, 023703 (2012). - Longitudinal singular response of dusty plasma medium in weak and strong coupling limits,

Phys of Plasmas 19, 013706(2012). - Linear and Nonlinear Studies of Velocity Shear Driven Three Dimensional Electron-Magnetohydrodynamics Instability,

Phys of Plasmas, 19, 072103,(2012). - Collisionless Stopping of Electron Current in an Inhomogeneous Electron Magnetohydrodynamics Plasma,

Pramana, Vol. 77, No. 5, pp. 949-957,(2011). - Interaction of High Power Microwave with Plasma,

IEEE International Vacuum Electronics Conference, IVEC-2011 , pp. 481-482, February (2011). - Phase Mixing/Wave Breaking Studies of Large Amplitude Oscillations in a Cold Homogeneous Unmagnetized Plasma,

Plasma Phys. Control. Fusion 53, 074014(2011). - A plasma source for high power microwave interaction studies,

IEEE/NPSS 24th Symposium on Fusion Engineering (SOFE), Chicago, 5993096, 26-30, (2011). - Relativistic electromagnetic flat top solitons and their stability,

Physics of Plasmas 18, 112112(2011). - Energetic Electron Transport in an Inhomogeneous Plasma Medium,

AIP Conference Proceedings: International Symposium on Waves, Coherent Structures and Turbulence in Plasmas,Volume 1308, 158-168, November (2010). - Free energy source for flow shear driven instabilities in Electron Magnetohydrodynamics,

Phys. Plasmas 17, 042106 (2010). - Nonlinear studies of fast electron current pulse propagation in a two dimensional inhomogeneous plasma,

Phys. Plasmas, 17, 052306 (2010). - Nonlinear wave propgation in strongly coupled dusty plasma,

Phys. Rev. E 81, 036407 (2010). - Intermittency like phenomena in Plasma Turbulence,

World scientific vol. 1 Pg. 151-185 (2010). - Electron velocity shear driven instability in relativistic regime,

Physics of Plasmas 17, 022101 (2010). - Role of natural length and time scales on shear driven two-dimensional electron magnetohydrodynamic instability,

Phys. Plasmas 16, 072310 (2009). - Evidence of anomalous resistivity for hot electron propagation through a dense fusion core in fast ignition experiments,

New Journal of Physics, 11 093031 (2009). - Anomalous energy dissipation of electron current pulses propagating through an inhomogeneous collisionless plasma medium,

Phys Plasmas. 16, 040701 (2009). - Polarimetric detection of laser induced ultrashort magnetic pulses in overdense plasma,

Phys. of Plasmas. 16, 043114 (2009). - Phase mixing of relativistically intense waves in a cold homogeneous plasma,

Phys. Rev. E79, 026404 (2009). - Near-Complete Absorption of Intense, Ultrashort Laser Light by Sub-lambda Gratings,

Physical Review Letters 101, 145001 (2008). - Propagation of electron magnetohydrodynamic structures in a two-dimensional inhomogeneous plasma,

Phys. Plasmas 15, 062308 (2008). - Relaxation and self organization in two dimensional plasma and neutral fluid flow systems,

Phys. Plasmas 15, 022308 (2008). - Role of current shear driven turbulence in anomalous stopping of energetic electrons,,

Phys. Letts. A 363 125 (2007). - Stability of nonlinear one-dimensional laser pulse solitons in a plasma,

Phys. Plasmas 14, 072307 (2007). - Zero-dimensional model for magnetic curvature driven Rayleigh Taylor turbulence simulations,

Physica A 378 211-222 (2007). - Wave induced barrier transparency and melting of quasi-crystalline structures in two dimensional plasma turbulence,

Phys. Plasmas 14, 042307 (2007). - Diagnosing the dynamics of fast electron transport with self induced magnetic fields,

J. Phys. IV France 133, 537 (2006). - Real time study of fast electron transport inside dense hot plasmas,

Phys. Rev E 73, 036409 (2006). - Fluid Simulation studies of the dynamical behaviour of one dimensional relativistic electromagnetic solitons,

Phys. Plasmas 13, 032309 (2006). - Formation of density blob and its dynamics in the edge and the scrape off layer of a tokamak plasma,

Phys. Plasmas 12, 102515 (2005). - Edge and scrape off layer tokamak plasma turbulence simulation using two-field fluid model,

Phys. Plasmas 12, 072520 (2005). - Short laser pulse induced generation of hot electrons and their anomalous stopping in overdense plasmas,

Nucl. Fusion 45, 1377-1385 (2005). - Laser Absorption in short lived metal and nanoplasmas,

Applied Phys. B Laser and Optics (2005). - Laser Pulse induced second harmonic and hard X-Ray emission: Role of plasma wave breaking,

Phys. Rev. Letts. 95, 025005 (2005). - Rayleigh Taylor instability driven nonlinear vortices in dusty plasmas,

Phys. Plasmas 12, 044506 (2005). - Nonlinear saturated states of the magnetic curvature driven Rayleigh Taylor instability in three dimensions,

Phys. Plasmas 12, 032302 (2005). - Kink instability in electron magnetohydrodynamics,

Phys. Plasmas 11, 4390 (2004). - Simulation of plasma transport by coherent structures in scrape-off-layer tokamak plasma,

Phys. Plasmas 11, 4018 (2004). - Sausage instabilities in the electron current layer and its role in the concept of fast ignition,

Nucl. Fusion, 44, 98 (2004). - A continuum one dimensional SOC model for thermal transport in tokamaks,

Nucl. Fusion, 43 1740 (2003). - Continuum Self Organized criticality model of turbulent heat transport in tokamaks,

Phys. Rev. Letts; 91, 025001 (2003). - Nonlinear electron magnetohydrodynamic simulations of sausage like instability of current channels,

Phys. Plasmas 10, 29 (2003). - Laser generated Ultrashort Multimegagauss magnetic pulses in plasmas,

Phys. Rev. Letts. 89, 225002-1 (2002). - Weakly relativistic one dimensional laser pulse envelope solitons in a warm plasma,

Phys. Plasmas 9, 3802 (2002). - Nonlinear coupling of whistler wave turbulence with magnetosonic perturbations,

Phys. Plasmas 9, 2609 (2002). - Laser envelope solitons in cold overdense plasmas,

Physics of Plasmas, 9 1820 (2002). - Fast zonal field dynamo in collisionless kinetic Alfven wave turbulence,

Phys. Letts A 302, 119 (2002). - Zonal and streamer structures in magnetic curvature driven Rayleigh Taylor instability,

Physics of Plasmas, 8 5104 (2001). - Zonal flow and field generation by finite beta drift wave and kinetic drift Alfven waves,

Physics of Plasmas, 8 4518 (2001). - Nonlocal Sausage like instability of current channel in Electron Magnetohydrodynamics,

Physics of Plasmas, 8 4518 (2001). - Secondary Instability in Drift Wave Turbulence as a Mechanism for Zonal Flow and Avalanche Formation,

Nuclear Fusion, 41 1067 (2001). - Zonal flow and zonal magnetic field generation by finite beta drift waves: a theory for L-H transitions in tokamaks,

Phys. Rev. Letts. 87 015001-1 (2001). - Hydrodynamic regime of two dimensional Electron Magnetohydrodynamics,

Physics of Plasmas 7, 1366 - 1373 (2000) . - Cylindrical solitary envelope pulses in warm overdense plasmas,

Physics of plasmas 7, 1056 - 1059 (2000) . - Whistlerization and anisotropy in two dimensional electron magnetohydrodynamic turbulence,

Physics of Plasmas 7, 571 - 579 (2000) . - Theory of two dimensional mean field electron magnetohydrodynamics,

Physics of Plasmas 7,170 - 177 (2000) . - Nonlinear aspects of two dimensional electron magnetohydrodynamics,

Plasma Phys. Control. Fusion 41, A531 - A538 (1999) . - Collisional amplification of test electromagnetic waves in a plasma subject to an intense high frequency laser field,

Physics of Plasmas 5, 2533 - 2543 (1998) . - Reverse Shear Fronts in a Tokamak Plasma with evolving Shear,

Nuclear Fusion 37, 1569 -1574 (1997) . - Nonlinear Saturation of the Rayleigh Taylor Instability,

Phys. Plasmas 4, 1018 - 1027 (1997). - Stability of Vortex Flows in Magnetized Plasmas. I. Non Boltzmann Vortices,

Phys. Plasmas 2, 3296-3301 (1995). - Mapping Closure for Probability Distribution Function in Low frequency Magnetized Plasma Turbulence,

Phys. Plasmas 2, 1497 (1995) . - Log Normal Intermittency and Randomly Stirred Fluids,

Europhys. Letts, 26, 527-532 (1994). - Instability of Elliptical Vortex Cores in Electron Clouds,

Phys. Letts A164, 419-423 (1992) . - The electronic Structure of Point Defects in Semiconductor Alloys: Simplified Approximatios,

J.Phys.Condens. Matter 4, 2209-2216 (1992). - Turbulent Rayleigh Benard Convection in a Conducting Fluid in a Strong Magnetic Field,

Phys. Rev. A43,1097 (1991) . - Transient Spectroscopy and Disorder,

Radiation Effects and defects in Solids 111, 385-392 (1989) . - Deep Level Transient Spectroscopy (DLTS) Analysis of Defect Levels in Semiconductor Alloys,

Semiconductor Science and Technology 3, 1177-1183 (1988). - Paired Temperature Spectroscopy, a Novel Method to Characterize Traps in Semiconductors,

J.Phys.C: Solid State Physics 19, 2177-2186 (1986).

Other Information

- Vice President of the Plasma Science Society of India (PSSI) (2006 - 2008).
- General Secretary of the Plasma Science Society of India (PSSI) (2004 - 2006 ).

Selected Invited Talks

- Nonlinear Aspects of Electron Magnetohydrodynamics
**(Invited Topical lecture)**International Congress in Plasma Physics, ICPP-1998, Prague. - Complexity and Slelf Organization in EMHD Turbulence
**(Invited Talk)**APS- DPP, Chicago, Seattle, Oct 1999. - Waves and Turbulent Phenomena in Electron Magnetohydrodynamics.
**(Seminar)**Physics Department, UCSD, Feb 2000. - Self Organization and wave induced melting of quasi-crystalline patterns in 2-D plasma flows.
**(Invited Talk)**International conference on Frontiers of nonlinear physics. Nizhny Novgorod, Russia 3 - 9 July 2007. - Theoretical description of electron transport and stopping in fast ignition
**(Invited Talk)**1st NILES International workshop on Lasers and Plasmas joined with the 10th Easter Plasma Meeting at Cairo, Egypt, 15th - 19th March (2008). - Intermittency in Plasma Turbulence
**(Overview Talk )**2008 ICTP International workshop on the frontiers in modern Plasma Physics - Collisionless stopping of current pulses in an inhomogeneous EMHD plasma .
**(Invited Talk )**15th International Congress on Plasma Physics (ICPP) & the 13th Latin American workshop on Plasma Physics (LAWPP) held at Santiago, Chile, August 8 - 13, (2010). - Collisionless stopping of current pulses in an inhomogeneous EMHD plasma ).
**(Invited Talk)**(a) "The Nature of Turbulence", KITP in Santa Barbara (UCSB) (b) UCLA and (c) Princeton Plasma Physics Laboratory U.S.A (March 15th to June 15th (2011). - Guiding and Collimation of electron current pulses in Plasma.
**(Invited Talk)**(a) Plasma Conference (Nov 22nd - Nov 25th) (2011) and (b) the 1st ASHULA ( ASian core program for High energy density Science) (Using intense LAser photons held at Kanazawa, Japan. - Collective behavior in strongly coupled dusty Plasma medium
**(Keynote address)**International Conference on the Physics of dusty Plasmas ICPDP at New Delhi, March (2014). - Collective behavior of strongly coupled dusty plasma medium
**(Invited Talk)**International Congress on Plasma Physics 15th to 19th Sept(2014). - Simulation and modeling of magnetic field dynamics in laser plasma interaction
**(Invited Talk)**10th Asia Plasma and Fusion Association Conference at Gandhinagar – India 14th to 18th Dec (2015) - Plasma based Particle Accelerators.
**(Introductory talk)**ICTS, Bangalore March 2017. - Electron transport in Plasmas.
**(Invited Talk)**University of Iowa, USA; oct 2017. (Colloquium talk) Physical Research Laboratory, Ahmedabad, Gujarat Nov 2017