Invited Talks/Paper presentation

Invited Talks Delivered: 37

In Conferences/symposium: (26)

1.      “MHD instabilities and their role in plasma confinement” in 2nd BRICS Young Scientist Forum, Hangzhou, China, 11-15, July 2017.

2.      Hydromagnetic instabilities in strongly coupled dusty (complex) plasmas, International Conference on Space & Plasma Science (ICSPS-2015), Govt. Vivekanand PG College, Maihar (M.P.), 22-24, September 2015.

3. Dust in MHD instabilities and Fusion, 4th ASEAN School on Plasma and Nuclear Fusion (ASPNF-2018), Chiang Mai University, Chiang Mai (Thailand), 29 Jan-03 Feb 2018.

4. “Nuclear Fusion: A Future Source of Unlimited Energy”, BRICS YSF Alumni Conclave, NIAS, Bengaluru, 2-4 December 2018.

5. “Waves, instabilities and structure formations in dusty (complex) plasma: Some astrophysical applications, PLASMA-2018 conference, Delhi University, 4-7 December 2018.

6. Magnetohydrodynamic fluid theory for analysis of wave propagation, Skill Development Training programme on Basic Laboratory Skill and Safety Management in Physical Sciences”, 12-13, March 2019 GGV, Bilaspur.

7. Firehose and mirror instabilities in degenerate quantum plasmas, 12th International Conference on Plasma Science and Applications (ICPSA-2019), University of Lucknow, Lucknow, 11-14, Nov 2019.

8. Waves and instabilities in dusty space plasmas, 14th Asia Pacific Physics Conference (APPC-2019), AAPPS and Institute of Physics Malaysia, 17-21 November (2019).

9. Ujjain (Avanti): A Centre of Great Indian Ancient Mathematicians and Astronomers, 27th International Conference on International Academy of Physical Sciences (CONIAPS XXVII), Vikram University, Ujjain, 26-28, October, 2021.

10.  Cosmic ray diffusion and gravitational collapse in radiative molecular clouds, 21st National Space Science Symposium, IISER Kolkata, 31st Jan. to 4th Feb. 2022.

11. Gravitational instability of molecular clouds including cosmic rays diffusion and finite Larmor radius corrections, 2nd International Conference on Plasma Theory and Simulations, University of Lucknow, 20-22 June, 2022.

12. A Talk on “National Education Policy -2020: Opportunities and Challenges”, Govt. College Ghattiya, Ujjain M.P., 14th Feb. 2022.

13.  A Talk on “Ancient Theory of Atomism and Kanada’s Contribution” Two Days Workshop on Development of Physics Content in perspective of NEP-2020, Sardar Patel University, Mandi (H.P.), 29-30 June, 2022.

14.  A Talk on “Cosmic-rays driven MHD waves and gravitational instability in magnetized plasmas” 6th Asia Pacific Conference on Plasma Physics, 9-14 October, 2022, as e-conference (AAPPS-DPP, Japan)

15. Popular lecture on “Fundamentals of Plasma Physics: Applications in Fusion and Astrophysical Plasmas” Department of Physics, Guru Nanak Dev University, Amritsar, Punjab, 03rd February 2023.

16.  A talk on “Basic principles of Magnetohydrodynamics: Application to the Sun and Heliosphere”, Department of Physics, IIT BHU, Varanasi, 25-27, Feb. 2023.

17.  A Talk on “Hydrodynamic fluid instabilities: Applications in space and astrophysical plasmas”, International Conference on Recent Advances in Mathematical Sciences (ICRAMS-2023), 29-30 March, 2023, Department of Physical, Himachal Pradesh University, Shimla (H.P.)

18.  Invited Talk on “Pressure anisotropy driven MHD waves and firehose instability in space plasmas”, 38th National Symposium on Plasma Science and Technology (PLASMA-2023), 4-8, December 2023, UPES, Dehradun.

19.  Invited talk on “Dissipation of MHD waves and pressure anisotropy driven firehose instability in solar wind plasma” 1st Global forum and International Workshop in Hybrid mode on Industrial Plasma Processes and Diagnostics, Department of Energy Science and Engineering, IIT Delhi, India, May 9-10, 2024.

20.  Invited Talk on “Galactic cosmic ray driven MHD waves and gravitational instability in dusty molecular clouds”, 21st International Congress on Plasma Physics (ICPP-2024), Ghent, Belgium, 8-13 September 2024 (Online).

21.  Invited Talk on “Galactic cosmic ray driven MHD waves and gravitational instability in dusty molecular clouds”, 8th Asia Pacific Conference on Plasma Physics (AAPPS-DPP 2024), Malacca, Malaysia, 3-8 November 2024.

22.  Invited Talk on “Indian Ancient Mathematicians and their contributions to the Indian Knowledge System”, National Mathematic Day-2024, Himachal Pradesh University, Shimla, 19 December, 2024.

23.  Invited Talk on “Contributions of Ancient Indian Mathematicians to the Indian Knowledge System”, National Mathematic Day-2024, School of Computational and Integrative Sciences, JNU, New Delhi, 22 December, 2024.

24.  Lecture delivered on “Contributions of Ancient Indian Mathematicians to the Indian Knowledge System”, in Faculty Induction Programme- 18, Jan. 8 – Feb. 4, 2025, UGC-MMTTC, JNU.

25.  Lecture delivered on “MHD waves in astrophysical plasmas”, in SERB-SSR Workshop, SPS, JNU, March 17th, 2025.

26. Invited Talk on “Suprathermal corrections on galactic cosmic rays driven Magnetohydrodynamic (MHD) waves in solar wind plasmas, 2nd International Conference on Industrial Plasma Processes and Diagnostics (IPPD 2025), 18-20 May 2025, IIT Delhi.

Webinar (Online) Talks: 11

1.   An Invited Talk in Webinar on Plasma Science and Future Perspective: Plasma Physics Early Universe to ITER, Shri Vaishnav Vidhyapeet Vishwavidyalaya, Indore, 10-12, August 2020.

2.   An Invited Talk in One Day Webinar on Plasma Science & It’s Applications, Title of Talk: Nuclear Fusion: Future Source of Unlimited Clean Energy, Barkatullah University, Bhopal (M.P.), 29, July 2020.

3.   An Invited Talk on Role of Ancient Indian Scientists in the development of Science and Mathematics, Govt. Kalidas College, Ujjain, 13-08-2021.

4.   An Invited Talk on India in Future, Madhav Sciecne College, Ujjain M.P.,

5.   An Invited Talk in Ujjain (Avanti): A Great Centre of Ancient Mathematician and Astronomer, Institute of Computer Science, Vikram University, Ujjain M.P., October 26-28, 2021.

6.   An Invited Talk on Fundamentals of Quantum Mechanics, LCIT College, Bilaspur C.G., January 10, 2022.

7.   An Invited Talk on Waves, instabilities and structure formation in astrophysical plasmas, Department of Physics, Central University of Himachal Pradesh, Dharmshala (H.P.) 11 April, 2022.

8.   An Invited Talk on Hydrodynamic instabilities in astrophysical plasmas, IGNOU Regional Centre, Bhubneshwar, 4th January 2024.

9.   Keynote talk on “Indian Science and Technology: Vision@2047” in One Day National Webinar on Recent Advances in Science & Technology, Organized by Govt. College Makdon, Ujjain, May 27, 2024.

10. Keynote talk on “How to write a research paper using Latex” in One Day National Webinar on Art of research paper writing using writing and editing tools organized by Govt. College Khategaon, Dewas, May 28, 2024.

11. Keynote talk on “Use of modern technology in teaching and learning” in One Day National Webinar on Use of modern technology in teaching and learning organized by Govt. Swami Vivekanand College, Sarangpur, Rajgarh, M.P. May 25, 2024.

Papers presented in Conferences/Symposia [41]:

International:

1. Effect of magnetic field on Jeans instability of quantum dusty plasma: application in white dwarf star, R. P. Prajapati and R. K. Chhajlani, 24th International Symposium on Plasma Physics and Technology (SPPT-2010), Czech Technical University, Prague 6, Czech Republic, 14-17 June 2010. (Oral)

2. Hydromagnetic instabilities in magnetized plasmas, R. P. Prajapati, Joint ICTP/IAEA workshop on dense magnetized plasma and plasma diagnostics, The Abdus Salam International Center for Theoretical Physics (ICTP), Trieste, Italy, 15-26 Nov. 2010. (Oral)

3. Influence of polarization force on Jeans instability of self-gravitating magnetized dusty plasma, R. P. Prajapati and R. K. Chhajlani, 6th International Conference on Physics of Dusty Plasma (ICPDP-2011), Garmisch-Parterkichen, Germany, 16-20 May 2011.

4. Hydrodynamic stability of Conservative Regularized Couette Flow, R. P. Prajapati, R. Ganesh, A. Sen and C. Thyagaraja, International Conference on Complex Processes in Plasmas and Nonlinear Dynamical Systems (ICCPNDS-2012), Institute for Plasma Research, Bhat, Gandhinagar (Gujarat), India, 6-9 Nov. 2012.

5. Non-ideal effects in self-gravitating uniformly rotating magnetized viscoelastic fluids, R. P. Prajapati and R. K. Chhajlani, 23rd International Toki Conference on Large Scale Simulation and Fusion Science (ITC-23), National Institute for Fusion Science, Gifu, Japan, 18-21 Nov. 2013.

6. Effects of rotation and Hall current on the Jeans instability of magnetized finitely conducting viscoelastic fluid, R. P. Prajapati and R. K. Chhajlani, 7th International Conference on the Physics of Dusty Plasmas (ICPDP-2014), New Delhi, March 3-7, 2014.

7. Radiative-Condensation Instability In Gravitating Strongly Coupled Dusty Plasma With Polarization Force, R. P. Prajapati, S. Bhakta and R. K. Chhajlani, 29th National Symposium on Plasma Science and Technology & International Conference on Plasma Science and Technology (PLASMA 2014), M. G. University Kottayam, Kerala, 8-11 December 2014.

8. Radiative condensation instability in gravitating strongly coupled complex plasma with polarization force, R. P. Prajapati, S. Bhakta and R. K. Chhajlani, International Conference on Emerging Interfaces of Plasma Science and Technology (EIPT-2015), S. S. in Physics, Vikram University, Ujjain (M.P.), 9-10 March, 2015. (Oral)

9. Radiative condensation instability in partially ionized dusty plasma with dust-neutral collisions and polarization force, International Conference on Space & Plasma Science (ICSPS-2015), Govt. Vivekanand PG College, Maihar (M.P.), 22-24, September 2015.

10. Influence of rotation on Rayleigh-Taylor instability of magnetized strongly coupled viscoelastic fluid, International Conf. on High Power Coherent Radiation Generation & its Interaction with Matter, SATI, Vidisha (M.P.), 12-14 Feb. 2016. (Oral)

11. Influence of Rotation on Rayleigh-Taylor Instability in Non-uniform Magnetized Strongly Coupled plasma, 18th International Congress on Plasma Physics (ICPP-2016), Kaohsiung, Taiwan, June 27-July 01, 2016.

12. Jeans Instability in Radiative Collisional Dusty Plasma with Polarization Force, 13th Joint APPC-AIP Conference, Brisbane, Australia, December 4-8, 2016.

13. Rayleigh-Taylor Instability in non-uniform magnetized rotating strongly coupled viscoelastic fluid, 13th Joint APPC-AIP Conference, Brisbane, Australia, December 4-8, 2016.

14.  Small amplitude waves and linear firehose and mirror instabilities in rotating polytropic quantum plasmas, International Symposium on Nonlinear Waves in Fluids and Plasmas, IIT, Delhi, 28-02-2017 to 01-03-2017.

15.  Neutrino-beam-plasma interactions in gravitating dense quantum plasma, 2nd Asia Pacific Plasma Conference (AAPPS-DPP-2018), Kanazawa (Japan), 12-17 Nov. 2018.

16. Small amplitude waves and linear firehose and mirror instabilities in polytropic quantum plasma, 2nd Asia Pacific Plasma Conference (AAPPS-DPP-2018), Kanazawa (Japan), 12-17 Nov. 2018.

17. Rayleigh-Taylor instability and internal waves in Strongly coupled quantum plasma, 14th Asia Pacific Physics Conference (APPC-2019), AAPPS and Institute of Physics Malaysia, 17-21 November (2019).

18. Dissipation of MHD waves in the viscous polytropic zone of the solar wind with non-ideal and FLR effects, 20th International Congress on Plasma Physics (ICPP-2022), Gyeongju, Korea, 27 Nov. – 02 Dec. 2022.

19. Internal waves and Rayleigh-Taylor instability in magnetized compressible strongly coupled dusty plasmas, Deepak and R. P. Prajapati, 8th Asia Pacific Conference on Plasma Physics (AAPPS-DPP 2024), Malacca, Malaysia, 3-8, Nov. 2024 (Poster Presentation).

20. Gravitational instability of strongly coupled magnetized quantum plasma with radiation pressure, Mehak Mahajan and R. P. Prajapati, 8th Asia Pacific Conference on Plasma Physics (AAPPS-DPP 2024), Malacca, Malaysia, 3-8, Nov. 2024 (Poster Presentation).

National:

1.   Self-gravitational instability of rotating anisotropic heat-conducting plasma, R. P. Prajapati, A. K. Parihar, P. K. Sharma and R. K. Chhajlani, PLASMA-2006, MNIT Jaipur, India, 19-22 Dec. 2006.

2.  Jeans instability of self-gravitating dusty plasma in the low frequency range, R. K. Chhajlani, R.P.Prajapati, S. Kaothekar, P. K. Sharma and R. K. Pensia, Bhartiya Vigyan Sammelan, Bhopal, India, 23-25 Nov. 2007.

3.  Effect of rotation on Kelvin-Helmholtz instability of two superposed streaming magnetized fluids with suspended dust particles, R. P. Prajapati and R. K. Chhajlani, PLASMA-2007, Ahmedabad, India, 6-10 Dec. 2007.

4. Kelvin-Helmholtz instability of compressible fluids with generalized polytrope laws using three-dimensional configurations, R. P. Prajapati, Silver Jubilee All India Young Scientist Conference, MPCST, Bhopal, India, 23-25 Nov. 2007.

5. Kelvin-Helmholtz instability of anisotropic pressure plasma with oblique magnetic field using generalized polytrope laws, R. P. Prajapati and R. K. Chhajlani, Fourth M.P. Science Congress-2007, Govt. Holkar Science College, Indore, 26-27 Dec. 2007.

6.    Kelvin-Helmholtz instability of magnetized plasmas with surface tension and   dust particles, R. P. Prajapati and R. K. Chhajlani, PLASMA-2008, BARC Mumbai, India, 10-13 Dec. 2008.

7.   Kelvin-Helmholtz instability of anisotropic pressure plasma using generalized polytrope laws with three-dimensional configurations, R. P. Prajapati, Madhya Kshetriya Vigyan Sammelan, Govt. M. Home Science & Science College Jabalpur, M.P. India, 21-22 Feb. 2009 (Oral) (Won Young Scientists Award in Physics with Gold Medal).

8.     Effects of pressure anisotropy on the Kelvin-Helmholtz instability of collisionless plasma using generalized polytrope laws, R. P. Prajapati, 24th M.P. Young Scientist Congress, M.P. Council of Science & Technology Bhopal, M.P. India, 28 Feb-01 March 2009. (Oral)

9.    Effect of dust particles and flow velocity on Kelvin-Helmholtz instability of magnetized plasmas, R. P. Prajapati, 97th ISCA Young Scientists Award Programme-2009-10, University of Kerla, Thiruvanantpuram, Kerla India, 27th October 2009. (Oral)

10. Effects of radiative pressure and heat-loss functions on Jeans instability of magnetized self-gravitating dusty plasma, R. P. Prajapati and R. K. Chhajlani, PLASMA-09, NIT, Hamirpur (H.P.), 8-11 December 2009.

11. Effect of flow velocity and pressure anisotropy on Kelvin-Helmholtz instability of anisotropic plasma using polytrope laws, R. P. Prajapati and R. K. Chhajlani, PLASMA-09, NIT, Hamirpur (H.P.), 8-11 December 2009 (Won Buti Young Scientists Award). (Oral)

12. Condensation of astrophysical quantum dusty plasma; Formation of white dwarf star and modified Jeans instability, R. P. Prajapati, Silver Jubilee M. P. Young Scientist Congress, MPCST Bhopal (M.P.), 22 & 23 February 2010. (Oral)

13. Kelvin-Helmholtz instability of magnetized plasmas with suspended dust particles and different flow velocities flowing through porous medium, R. P. Prajapati and R. K. Chhajlani, NSRAP-2011, Govt. Holker Science College Indore (M.P.), 15 Feb 2011.    

14. Jeans instability in quantum dusty magnetized plasma: Formation of compact stars, R. P. Prajapati, EIPT-2011, S. S. in Physics, Vikram University Ujjain (M.P.), 28-30 March 2011. (Oral)

15.  Hydromagnetic instabilities in plasmas, R. K. Chhajlani and R. P. Prajapati, PLASMA-2011, BIT, Patna (Bihar), 20-23 Dec. 2011. (Oral)

16. Neutrino-Beam-Plasma interactions in quantum magnetoplasma, R. P. Prajapati, PLASMA-2017, IPR Gandhinagar (Gujarat), India, 7-10 Nov. 2017.

17. Jeans instability of dusty plasma with dust charge gradient force, R. P. Prajapati, B. Dolai and R. K. Chhajlani, PLASMA-2018, Delhi University, 4-7 December 2018.

18. Neutrino-beam plasma interactions in dense gravitating degenerate quantum plasma, R. P. Prajapati and R. K. Chhajlani, EIPT-2019, S. S. in Physics, Vikram University Ujjain M.P., 29-30, Aug. 2019

19. Effects of ion drag force and dust charge gradient force on the Coulomb fissioning of unmagnetized dusty plasma, R. P. Prajapati and K. Avinash, 3rd National Seminar on Nonlinear and Complex Phenomena, Jadavpur University (Kolkata), 18-11, February 2020.

20. Cosmic rays diffusion and gravitational collapse in radiative molecular clouds including ion Larmor radius corrections, R. P. Prajapati, PLASMA-2021, 13-15, December 2021, BIT Mesra Jaipur Campus.

21. Hydromagnetic waves and instabilities in dense astrophysical plasmas, R. P. Prajapati, National Conference on Astrophysics, Astronomy & Astrology (ASTRO-2024), Odisha Vigyan Mandal, Cuttak, 04th Jan. 2024.