Areas of Interest/Specialization:

1. Interaction of heavy ions with matter
2. Theoretical Condensed Matter Physics – Material Science
3. Climate change studies in Meghalaya
4. Radon studies in Meghalaya

Last 10 years contribution

Ph.D. Supervised:

1. Ashok Kumar Jha (2012) -“A Study of Elastic Scattering and Electron Capture Processes in Collisions Of 3He2+ Ion With CO Molecule Below 5 Kev”
2. Deveshwori Maibam (2014) - “Studies on Radon Activity in Soil-air, Indoors and in Water at Selected Locations in Meghalaya”
3. Yubaraj Sharma (2015) - “Studies on Stopping Powers, Etching and Annealing Characteristics Heavy Ion Irradiated Nuclear Track Detectors”
4. Jeeban Prasad Gewali (2014) - “Studies on Heavy Ion Electronic Stopping Power and  Characteristics of Nuclear tracks in Solid State Nuclear Track Detectors”.
5. Arnestar Syiemiong (2020) - “A theoretical study of potential energy curves, spectroscopic and molecular properties of the CO⁺ cation”.
6. Alfanel Khardewsaw (2020) - “Studies on Radon and Radium Activity in West and South-West Khasi Hills District of Meghalaya”.
7. Mahesh Ram (2021) - “A Study of Electronic and Magnetic Properties of Cu-Mn and Ni-Mn based Heusler Alloys using Density Functional Theory”.
8. Aibanjop Pyngrope (2021) - “Measurement of radon, thoron and gamma levels in three districts of  Meghalaya”.
9. Double M Siangshai (2022) - “Study on Relationship Between Radon Concentration in Soil-Air and Earthquake Parameters in the Shillong Plateau”. 
10. Shailes Swer (2022) - “A computational study of stability, transition dipole moment and radiative  lifetimes of several low lying electronic states of the CO molecule”.
11. Dipangkar Kalita (2023) - “Study of Structural, Thermodynamical and Electronic Properties of Heusler Alloys for Thermoelectric and Spintronic Applications”.
12. Nihal Limbu (2023) - “Study of Electronic and Thermoelectric Properties of Lanthanide Filled Skutterudites”.
13. Raju Kalita (2023) - “Study on Variation of Weather and Climate System in the Complex Terrain       of Meghalaya using a Dense Network of Automatic Weather Stations”.

Joint- Supervised:

1. Bobbyland Lyngkhoi (2021),
2. Jodie Tiffany Ryngnga.

Research Projects

Radon monitoring in groundwater of the Northern India region to study the Neotectonic activities and health hazard. BRNS-DAE (2007-10) Measurement of Radon, Thoron and Gamma radiation level in three districts of Meghalaya. BRNS- DAE, (2016-19).

Climate change assessment in selectd areas of Meghalaya using meteorological Measurements and its impact on water resources. DST (2019-2022)

Publications

International Journals:

1. R. Kalita, D. Kalita, and A. Saxena, A. Trends in Extreme Climate Indices in Cherrapunji for the period 1979 to 2020, Journal of Earth System Science (2023).
2. D. Kalita, M. Ram, N. Limbu and A. Saxena, DFT study of structural, mechanical, thermodynamic, electronic, and thermoelectric properties of new PdTiZ (Z = Ge and Pb) half Heusler compound, International Journal of Quantum Chemistry, e26951(2022).
3. D. Kalita, N. Limbu, M. Ram, R. Kalita, and A. Saxena, Prediction of some physical properties in new half Heusler alloy NbAgSi, Journal of Solid State Chemistry, 310, 122999 (2022).
4. D. Kalita, M. Ram, N. Limbu and A. Saxena, Investigation of mechanical, thermodynamical, dynamical and electronic properties of RuYAs (Y= Cr and Fe) alloys, Journal of Physics: Condensed Matter, 34(8), 085501 (2021).
5. D. Kalita, N. Limbu, M. Ram, R. Kalita, and A. Saxena, Study of lattice dynamic, electronic and mechanical properties of Half-Heusler RuCrP alloy, Materials Today Communications, 29, p.102799 (2021).
6. Pyngrope, A. Saxena, A. Khardewsaw, Y. Sharma and B.K. Sahoo, Effect of soil’s porosity and moisture content on radon and thoron exhalation rates, Journal of Radioanalytical and Nuclear Chemistry, 331,1975–1984 (2022).
7. N. Limbu. A. Saxena and A. Shankar, First principle study of the perspective thermoelectric material LnFe4Sb12 (Ln = La- Nd, Sm-Tb, Yb), Computational Material Science, 2022.
8. N. Limbu, M. Ram, H. Joshi, A. Saxena, and A. Shankar, Electronic and thermoelectric properties of Nd-Doped Ce filled skutterudites, Phys. Chem. Chem. Phys., 4, 4533 (2022).
9. N. Limbu, M. Ram, H. Joshi, A. Saxena, S. Bin Omran, R. Khenata, and A. Shankar, Enhanced electronic and thermoelectric properties of p-type doped filled skutterudites R Fe4Sb12 (R= Pr, Nd), Journal of Applied Physics,  128(14), p.145104 (2020).
10. N. Limbu, A. Saxena, R.K. Thapa, and A. Shankar, Study of electronic and the thermoelectric properties of Gd filled skutterudites, Journal of Solid State Chemistry, 282, p.121081 (2020).
11. M. Ram, A. Saxena, N.Limbu, H. Joshi and A. Shankar, Mechanical stability and origin of half-metallicity of new M2NiZ (M= Sc, Ti, and V; Z= Tl and Pb) Heusler alloys, J. Appl. Phys., 128, 053901 (2020).
12. M. Ram, A. Saxena, A.E. Aly and A. Shankar, Half-metallicity in new Heusler alloys Mn2ScZ (Z= Si, Ge, Sn), RSC Adv., 10, 7661-7670 (2020).
13. M. Ram, A. Saxena, A.E. Aly and A. Shankar, Study of half metallicity, structural and mechanical properties in inverse Heusler alloy Mn2ZnSi(1− x)Gex and a superlattice, RSC Adv., 9, 36680-36689 (2019).
14. Pyngrope, A. Khardewsaw, Y. Sharma, D. Maibam, A. Saxena, and B. K. Sahoo, “Study of Indoor Radon, Thoron and Their Progeny in South West Khasi Hills District of Meghalaya, India” Radiation protection dosimetry, 189(3), 347-353, 2020.
15. Y. Sharma, A. Saxena, D. Maibam, and J. P. Gewali, “Experimental Ranges of Energetic 238 U Ions in Tantalum” European Journal of Molecular & Clinical Medicine, 7(07), 2020.

National Journals:

1. D. Kalita, Y. Gupta and A. Saxena, Prediction of Dynamical, Thermodynamics and Mechanical properties of RuMnAs Compound under hydrostatic pressure, Bulletin of Materials Science, 45(3), 144. (2022).
2. D. Kalita, and A. Saxena, Study of Structural, Electronic and Thermodynamic properties of Half-Heusler alloy RhTiSb, Transient IX:80-89 (ISSN: 2250-0650) (2022).
3. R. Kalita, M. D. Shadap, and A. Saxena, Trend Analysis and Change Point Detection of Diurnal Temperature Range in Shillong City. Transient IX:80-89 (ISSN: 2250-0650) (2022).
4. R. Kalita, D. Kalita, Y. Sharma, D. Walia and A. Saxena, Long-term trend analysis of temperature in Meghalaya. Hill Geographer 36(1):31-40 (ISSN: 0970-5023), (2020).
5. M. Ram, N. Limbu, A. Saxena and A. Shankar, Effect of magnetic degrees of freedom on the ground state configuration of Ni2ScGe Heusler alloy, Transient VIII (2021).
6. M. Ram, A. Saxena and A. Shankar, Pressure dependent study of electronic and magnetic properties of Mn2ZnSi full Heusler alloy, Transient VII (2018).
7. J. P. Gewali, and A. Saxena, “Annealing Characteristics of 11.56 MeV/u ⁵⁸Ni Irradiated Makrofol-E Detector” Indian Journal of  Science and Technology, 6(S3):P. 63-66, 2013.
8. D. Maibam, Y. Sharma, A. Saxena and D. Walia “Radon Activity in soil-air environment of Forest Urban Residential areas of Shillong, Meghalaya”, Indian Journal of Science and Technology 6(S3): p. 141-145, (2013)..
9. A. Saxena and Y. Sharma,, “Stopping Power of Aluminium for Energetic ²³⁸U Ions Using Nuclear-Track Technique”, Indian Journal of Science and Technology 6(S3): p. 59-62, (2013).
10.  A. Syiemiong, S. Swer, A. K. Jha and A. Saxena, "Theoretical study of the X²Σ+, A²Π and B²Σ+ electronic states of CO+ ion using MRCI method", Journal of Applied and Fundamental Sciences, Vol. 4(1), 19-23 (2018).
11.  A. Khardewsaw, D. Maibam, Y. Sharma and A. Saxena, “Indoor radon activity concentrations in Nongstoin Town, West Khasi Hills District, Meghalaya”, Journal of   Applied and Fundamental Sciences, 1(2): p. 196-199, (2015).
12. A. Khardewsaw, D. Maibam, Y. Sharma, A. Saxena, E. Nongneng, P. Ram and D. Walia “Radon measurements in the soils of Nongstoin and Mairang regions of West Khasi Hills district, Meghalaya”, Journal of Applied and Fundamental Sciences, 1(2): p.  228-232, (2015).
13.  D. Maibam, Y. Sharma, A. Khardewsaw, A. Kenye, D. Walia and A. Saxena “Assessment of soil-radium content, indoor radon activity and the associated radiation risks in Kohima  town, Nagaland”, Journal of Applied and Fundamental Sciences (2015) 1(1): p. 130-135.
14.  D. Maibam, Y. Sharma, A. Khardewsaw, A. Kenye, D. Walia and A. Saxena “Measurement of radon activity concentrations in the environs of Aizawl city, Mizoram” Journal of Applied and Fundamental Sciences (2015) 1(2): p. 207-212.
15.  Y. Sharma, D. Maibam, P. Ram, A. Saxena and D. Walia “A study on the indoor radon concentration in hospitals in the Shillong region, Meghalaya” Journal of Applied and Fundamental Sciences (2015) 1(1): p. 93-97.
16. A. K. Jha, A. Syiemiong, S. Swer and A. Saxena "A theoretical study of potential energy curves and transition dipole moment of the CO+  ion", Journal of Applied and Fundamental Sciences Vol. 1(2), 165-168 (2015).
17. A. K. Jha, A. Syiemiong, S. Swer and A. Saxena "Theoretical modelling of nuclear resonance vibrational spectra of complex molecules", Journal of Applied and Fundamental Sciences Vol. 1(2), 179-181 (2015).
18.  A. K. Jha, S. Swer, A. Syiemiong and A. Saxena"A Time-dependent study of electronic spectroscopy of 1, 3, 5 trans-hexatriene molecule", Journal of Applied and Fundamental Sciences Vol. 1(1), 157-159 (2015).
19.  A. K. Jha, S. Swer, A. Syiemiong and A. Saxena"A computational study of stability and transition dipole moment of several low lying electronic states of the CO molecule", Journal of Applied and Fundamental Sciences Vol. 1(1), 63-66 (2015)

International Proceedings:

1. D. Kalita, R. Kalita, Y. Sharma, and A. Saxena. "An experimental study of 93Nb ion ranges in Makrofol-E detector." In AIP Conference Proceedings, vol. 2352, no. 1, p. 050005. AIP Publishing LLC, (2021).
2. M. Ram, A. Saxena, and A. Shankar, Design of half-metal compensated antiferromagnets in Cu and Zn based full inverse Heusler alloys from 5-4 Rule, In AIP Conference Proceedings, 2265, 030348 (2020).
3. J. P. Gewali, and A. Saxena, “Range and maximum etchable track length for 93Nb ion in CR-39 detector” In Journal of Physics: Conference Series (Vol. 1531, No. 1, p. 012040). IOP Publishing, 2020.
4. Syiemiong, S. Swer, A. K. Jha, and A. Saxena, “Analysis of Franck-Condon factors for CO+ molecule using the Fourier Grid Hamiltonian method. In AIP Conference Proceedings (Vol. 1951, No. 1, p. 030007). AIP Publishing LLC, 2018.
5. S. Swer, A. Syiemiong, M. Ram, A. K. Jha, and A. Saxena, “Einstein coefficients and oscillator strengths for low lying state of CO molecules’ In AIP Conference Proceedings (Vol. 1951, No. 1, p. 030005). AIP Publishing LLC, 2018.
6. Khardewsaw, D. Maibam, Y. Sharma, and A. Saxena, “Studies on indoor radon activity concentration in two villages of West-Khasi Hills District of Meghalaya, India” In AIP Conference Proceedings (Vol. 1951, No. 1, p. 020011). AIP Publishing LLC, 2018.

Books Chapter:

1. D. Kalita and A. Saxena, Investigation of Elastic and Dynamical Properties of RhTiSb. In Proceedings of 28th National Conference on Condensed Matter Physics (pp. 151-158). Springer, Singapore (2021).
2. A. Pyngrope and A. Saxena, Radiation Exposure Due to Indoor Radon and Thoron in the Environs of Jowai Town, Meghalaya, India, Springer Proceedings in Physics, 265, 278-284 (2021), 

Collaboration/Consultancy:

International:   

1.R. Khanata - Laboratoire de Physique Quantique et de Modélisation Mathématique de la Matière, (LPQ3 M), Université de Mascara 29000, Mascara, Algeria

1. S. Bin Omran - Department of Physics and Astronomy, College of Science, King Saud University, P.O.Box 2455, Riyadh 11451, Saudi Arabia
2. Abeer E. Aly - Basic Science Department, El Salam Institute for Engineering and Technology, Cairo, Egypt
3. R. Buenker & H.P. Liebermann - Fachbereich C–Mathematik und Naturwissenschaften, Bergische  Universität Wuppertal, Germany
4. G. Fiedler, P. Crombach & E. Reichwein  - II Phsikalisches Institut, Justus-Leibig Universitat,  Giessen, Germany

National:

1. K.K. Dwivedi – Senior Vice President, RBEF, Amity University, Noida
2. Devesh Walia – Dept. of Geology, NEHU, Shillong.  

• R.K Thapa – Vice Chancellor of Sikkim Alpine University, Namchi, Sikkim.