After completing an M.Sc. in Physics, I began working as a Teaching Assistant in the Department of Physics at Amrit Campus, Tribhuvan University, in October 1994. In July 1997, I was promoted to Assistant Professor. The following year, in April 1998, I took study leave to pursue a Ph.D. at the University of Innsbruck, Austria, and returned to the same position in March 2002. I was subsequently promoted to Associate Professor in August 2009 and to full Professor in July 2019. 

Research Interests in:

• Atomic and Cluster Physics (Experiment)
• Mass Spectrometry (Experiment)
• Molecular Complexes (Computational-DFT)
• Metal Oxide Semiconductor, 2D Materials, Perovskite, Heusler Alloys, MAX phases (DFT)

Awards and Grants with Year in:

1. One-world Scholarship, Austrian Academic Exchange Service, Austria, 2000-2002.
2. Third World Academy Science Prize (TWAS-Prize) for developing country, 2003. then, Royal Nepal Academy of Science and Technology
3. UNESCO-TWAS Associate (2009-2011)
4. Royal Society Grants, UK, 2004 and 2010 as a Co-PI
5. International Science Program, Uppsala University, Sweden as a Co-PI 2021-2023.

1987-1989: B. Sc (Physics, Chemistry, Mathmatics):

Morang Campus, Tribhuvan University (TU), Biratnagar, Nepal.

1990-1992: M. Sc. (Solid State Physics),

Central Department of Physics, TU, Kirtipur, Kathmandu, Nepal.

1999-2002: PhD (Cluster Physics, Mass Specroscopy),

Institute for Ion Physics, University of Innsbruck, A-6020 Austria.

Thesis Title: Fragmentation of Cluster Ions Produced by Electron Impact Ionization.

Experiences (Professional Positions in List):

* Teaching Physics at I.Sc. (no longer offered by the university), B.Sc., and M.Sc. levels since 1994.

* Supervising Master's theses since 2009.

Experiences (Courses taught at Amrit Campus with Code number in List):

* Mechanics I, thermodynamics, statistical physics, electricity and magnetism. PHY 311.

* Quantum Mechanics I Phy503.

* Electrodynamics I Phy554.

* Electrodynamics II Phy602.

Top 10 publications list with DOI:

1. D. Oli, O.S. Rijal, R.K. Neupane, P. Shrestha, S. Sharma, L. P. Joshi, R. Parajuli, Study of adsorption behavior of HCN and H2S molecules over unlopped and Al-doped zinc oxide monolayer: A DFT approach, Results in Surfaces and Interfaces, 18 (2025) 100439. https://doi.org/10.1016/j.rsurfi.2025.100439.

2. D. R. Lawati, H. K. Neupane, D. K. Chaudhary, P. Shrestha, R. P. Adhikari, L. P. Joshi, R. Parajuli, Structural, mechanical, electronic and optical properties of MgZnO3 perovskite: First-principles study, J. Phys. Chem. Solids. 181 (2023) 111547. https://doi.org/10.1016/j.jpcs.2023.111547.

3. Alexander Kaiser, Michael Renzler, Lorenz Kranabetter, Matthias Schwärzler, Rajendra Parajuli, Olof Echt, Paul Scheier, On enhanced hydrogen adsorption on alkali (cesium) doped C60 and effects of the quantum nature of the H2 molecule on physisorption energies Int. J. Hydrog. Energy 42 (2017)3078. https://doi.org/10.1016/j.ijhydene.2017.01.069.

4. E. Bruzzi1, G. Raggi, R. Parajuli, A. J. Stace, Experimental binding energies for the metal complexes [Mg(NH3)n]2+, [Ca(NH3)n]2+ and [Sr(NH3)n]2+ determined from kinetic energy release measurements, J. Phys. Chem. A 118(2014)8525. https://doi.org/10.1021/jp5022642.

5. R. Parajuli, E. Arunan, Comprehensive investigations on DNa•••A (D = H/F) complexes show why ‘sodium bonding’ is not commonly observed Chem. Phys. Lett. 568–569 (2013) 63.https://doi.org/10.1016/j.cplett.2013.03.044.

6. J. Fedor, R. Parajuli, S. Matt-Leubner, O. Echt, F. Hagelberg, K. Gluch, A. Stamatovic,M. Probst, P.Scheier, and T. D. Ma¨rk, Probing Electronic States of Ne2+ and Ar2+ by Measuring Kinetic-Energy-Release Distributions, Phys. Rev. Lett. 91(2003) 133401 1-4. https://doi.org/10.1103/PhysRevLett.91.133401.

7. R. Parajuli, S. Matt, A. Stamatovic, T.D. Märk, P. Scheier, Unimolecular dissociation of non-stochiometric oxygen cluster ions On+* (n=5,7,9,11): A switch from O3 to O2 loss above cluster size n=5, Int. J. Mass Spectrom. 220 (2002) 221. https://doi.org/10.1016/S1387-3806(02)00666-8.

8. R. Parajuli, S. Matt, O. Echt, A. Stamatovic, P. Scheier, T.D. Märk, Binding energies of neon and krypton cluster ions, Chem.Phys.Lett., 352 (2001) 288. https://doi.org/10.1016/S0009-2614(01)01464-6

9. R. Parajuli, S. Matt, O. Echt, A. Stamatovic, P. Scheier, T.D. Märk, Decay reactions of rare gas cluster ions: kinetic energy release distributions and binding energies, Eur. Phys. D 16 (2001) 69. https://doi.org/10.1007/s100530170062

10. R. Parajuli, P. Scheier, V. Grill, S. Matt, O. Echt and T. D. Märk, Novel decay channels of carbon cluster ions, C40z+ and C41z+ (z = 3, 4), Chem.Phys.Lett., 330 (2000) 53. https://doi.org/10.1016/S0009-2614(00)01081-2