1. Invited talk on "Sheet modelling of relativistically intense plasma waves ", at High Energy Density Science ( in Asia ), Jan. 19 - 22, Busan Korea.

  2. Invited talk on "Evolution of Relativistically intense Space Charge Waves in a Cold Homogeneous Plasma", at Regional Conference in Radio Science ( 2 -5 Jan., 2014 ), Symbiosis Institute of Technology, Pune.

  3. Invited talk on "Modelling of Relativistic Longitudinal Plasma Waves", at 28th National Symposium on Plasma Science and Technology ( 3 - 6 Dec. 2013), KIIT University, Bhubaneswar (Odisha).

  4. Invited Lectures on " Nonlinear Oscillations and Waves in a cold homogeneous plasma: Analytical description and simulation using Dawson sheet model " , at National Workshop on Nonlinear Waves: Theory and Simulation ( NWTS- 2013 ), Jan. 14 - 18, 2013, Dept. of Mathematics, NIT, Durgapur.

  5. Invited talk on " Breaking of Relativistically intense longitudinal space charge waves: A Description using Dawson Sheet model ", at International Conference on Complex Processes in Plasmas and Nonlinear Dynamical Systems (ICCPPNDS - 2012), Nov. 6 - 9, 2012, IPR, Gandhinagar.

  6. Invited Lectures on " Simulation of Large Amplitude Plasma Waves and Wave Breaking Using Dawson Sheet Model " , at SERC school on Laser Produced Plasmas: Physics and Applications (July 9- 21, 2012), RRCAT, Indore.

  7. Invited Talk on " Mechanism of Hot Electron Generation in ultrashort ultraintense laser solid interaction", at 1st ASHULA (ASian core program for High energy density Science Using intense LAser photons) workshop (Nov. 29 - 30, 2011), Kanazawa, Japan.

  8. Invited talk on "Phase Mixing / Wave Breaking Studies of Large Amplitude Oscillations in a Cold Homogeneous Unmagnetized Plasma", at ICPPLAWPP 2010 (Aug. 8-13, 2010), Santiago, Chile.

  9. Invited talk on "Laser-pulse-induced Second Harmonic and Hard X-ray emissions from solid density plasmas: Role of Plasma wave breaking" at Institute for Advanced Simulation, Supercomputing centre, Germany (6th Aug.2010).

  10. Invited talk on "Modelling of intense ultrashort laser pulse-plasma interaction physics", at DST Meeting on ”Intense Laser Fields and Applications”, TIFR, Mumbai, (April 15-16, 2010).

  11. Invited Lectures on "Topics in Advanced Plasma Physics", at Centre for Astroparticle Physics and Space Science, Bose Institute, Kolkata, 24th Nov. to1st Dec. 2008.

  12. Invited Lecture on "Plasma Physics: An Introduction", at Centre for Astroparticle Physics and Space Science, Bose Institute, Kolkata, 22nd Aug. 2008.

  13. Invited talk on "Spatio-temporal evolution of Relativistically intense waves in a Cold homogeneous plasma ", at 8th Asia Pacific Plasma theory Conference, IPR, Ahmedabad, India, Dec. 2007.

  14. Invited talk on " Phase mixing of Relativistically intense waves in a Cold homogeneous plasma ", at 22nd National symposium on Plasma Science and technology, Ahmedabad, India, Dec. 2007.

  15. Invited talk on " Spatio-temporal evolution of Relativistically intense waves in a Cold homogeneous plasma ", at INSA-JSPS Meet, IPR, Ahmedabad, India, Nov. 2007.

  16. Invited talk on " Phase mixing of Relativistically intense waves in a Cold homogeneous plasma ", at Meet on Intense Laser Matter Interactions (MILMI), Khandala, India Oct. 2007.

  17. Invited talk on "Nonlinear phenomena in high intensity ultrashort laser-plasma interaction", at Indo-UK Discussion Meeting on Hot Plasmas in Intense Elec-tromagnetic Fields, TIFR, Mumbai, India, Apr. 2006.

  18. Invited talk on " High intensity ultrashort laser pulse-plasma interaction: generation of hot electrons and their transport through overdense plasma ", at 2nd International Conference on Current Developments in Atomic, Molecular & Optical Physics with Applications (CDAMOP - 06) , New Delhi, India,

  19. Invited talk on " Laser induced emission of second harmonic and hard X-rays from solid density plasmas " , at Second Asian Symposium on intense laser science (ASILS2), Taj Malabar, Kochi, India, Jan. 2006.

  20. Invited talk on " Physics of ultraintense ultrashort laser pulse-plasma interaction", at BARC, Mumbai, India, Feb. 2006.

  21. Invited talk on " Physics of high intensity ultrashort laser pulse-plasma interaction", at 20th National symposium on Plasma science and technology, CUSAT, cochin, India, Dec. 2005.

  22. Seminar on " Laser-pulse-induced Second Harmonic and Hard X-ray emissions from solid density plasmas: Role of Plasma wave breaking " at Institute For Plasma Research, Bhat, Gandhinagar, India, Nov. 2005.

  23. Invited talk on " Laser induced emission of second harmonic and hard X-rays from solid density plasmas " , at One day discussion meeting on Physics in Ultraintense Laser Fields, Tata Institute of Fundamental Research, Mumbai, India, Feb. 2005.

  24. Invited talk on " Particle-in-cell Simulation of Quark-Gluon Plasma ", at 19th National symposium on Plasma science and technology, Bundhelkhand University, Jhansi, India, Dec. 2004.

  25. Invited talk on " Second harmonic generation, hard X-ray emission and generation of Mega-gauss magnetic fields in laser-produced plasmas " at Instituto Superior Tecnico, Lisbon, Portugal, Nov. 2004.

  26. Invited talk on " Relativistic Phase Mixing in an arbitrary mass ratio cold plasma ", at 15th National symposium on Plasma science and technology, Saha Institute of Nuclear Physics, Kolkata, India, Dec. 2000.

  27. Invited talk on " Collective thermalization in Quark-Gluon Plasma ", at 14th National symposium on Plasma science and technology, Guru Nanak Dev University, Amritsar, India, Dec. 1999.

  28. Colloquium on " Phase mixing of Nonlinear Cold Plasma Oscillations " at Institute For Plasma Research, Bhat, Gandhinagar, India, June 1998.

  29. Invited talk on " Relativistic particle simulation of Collective thermalization in Quark-Gluon Plasma ", at 12th National symposium on Plasma science and technology, IPR, Ahmedabad, India, 1997.

  30. Invited talk on " Relativistic Particle Simulation of Collective Thermalization in a Coloured Parton Plasma ", at International Conference on Physics and Astrophysics of Quark-Gluon Plasma (ICPAQGP-97), Jaipur, India, March 1997.