Department of Physics & Electronics

Professor M A Punyasena

BSc (Kelaniya), MSc, PhD (Alberta), CPhys, FIP (SL)

Associate Professor

Specialized Field : Experimental Subatomic Physics

Email Address : sena@kln.ac.lk

Telephone No : +94 (0)11 2 903 348 (ext: 348)

+94 (0)77 8 898 143 (Residence)

Office Location : B1 331

Teaching : Mechanics

Nuclear Physics

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Research Interests

Pion Production reactions on medium heavy nuclei at intermediate energies

Storage and harnessing of solar energy in salt pan solar ponds

Membership in Professional Societies

Life Fellow Member, Institute of Physics in Sri Lanka (IPSL)
Life Member, Sri Lanka Association for the Advancement of Science (SLAAS)

Selected Publications

M. A. Punyasena: Study of the 76Se(n,p)76As Reaction at En = 198 MeV. The Thesis Submitted to the Faculty of Graduate Studies and Research in Partial Fulfillment of the Requirements for the Degree of Master of Science in Physics at the University of Alberta in Edmonton, Canada (1993).
M. A. Punyasena: Proton-Induced Nuclear Pion Production at Intermediate Energies. The Thesis Submitted to the Faculty of Graduate Studies and Research in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Physics at the University of Alberta in Edmonton, Canada (1996).
Helmer, R. L., M.A. Punyasena, R. Abegg, W. P. Alford, A. Celler, S. El-Kateb, J. Engel, D. Frekers, R. S. Henderson, K. P. Jackson, S. Long, C. A. Miller, W. C. Olsen, B. M. Spicer, A. Trudel, and M. C. Vetterli: Gamow-Teller Strength from the 76Se(n,p)76As Reaction: Implication for the Double Beta Decay of 76Ge, Phys. Rev. C 55 (1997) 2802-2810.
M. Benjamintz, W. R. Falk, E. G. Auld, J. R. Campbell, A. Green, E. Korkmaz, A. G. Ling, M. A. Punyasena, P. G. Roos, P. L. Walden, and S. Yen: Investigation of the 12C(p,d,pi+)11B Reaction in the Quasifree Region, Phys. Rev. C 58 (1998) 964-980.
P. L. Walden, T. G. Walton, C. A. Miller, S. Yen, R. Abegg, E. G. Auld, J. Campbell, J. Chakhalyan, R. Churchman, F. Duncan, W. R. Falk, D. Frekers, A. Green, P. E. W. Green, M. Hartig, O. Hausser, C. Haddock, K. Hicks, D. Hutcheon, G. Jones, Y. Ke, E. J. Korkmaz, N. Khan, A. Ling, D. E. Lobb, S. I. H. Naqvi, W. C. Olsen, A. Opper, A. Otter, M. A. Punyasena, P. Reeve, J. Zhao: Optical Design and Performance of the SASP Spectormeter at TRIUMF, Nuclear Instruments and Methods in Physics Research A 421 (1999) 142-162.
M. A. Punyasena, C. D. Amarasekara, J. R. P. Jayakody, P. A. A. Perera, An Investigation of Rain and Wind Effects on Thermal Stability of Large-area Saltpan Solar Ponds, Solar Energy, 74 (2003) 447.
M. A. Punyasena and K.D. Jayasuriya: A Home Made Double Slab Pyranometer for Irradiance Measurements, Proceedings of the 44th Technical Session of the Sri Lanka Association for the Advancement of Science (SLAAS) 44 (1988) 155.
M.A. Punyasena, P.L. Walden et. al., Proton Induced Nuclear Pion Production at Intermediate Energies, CAP Conference, Toronto, July, 1996.
P. S. Hewageegana, C. D. Amarasekara, J. R. P. Jayakody, M. A. Punyasena, A Study of Temperature and Salinity Variations with Depth in Salt Pans at Palavi in North-West Region of Sri Lanka. Annual Research Symposium, Faculty of Graduate Studies, University of Kelaniya, 2000.
P. S. Hewageeganage, C. D. Amarasekara, J. R. P. Jayakody, M. A. Punyasena, Investigation of Temperature and Density Profiles of Brines in Evaporating Salt Pans at Palaviya in the North-Western Region of Sri Lanka. Proceedings of the 16th Technical Session of the Institute of Physics - Sri Lanka. 2001.
M. A. Punyasena, C. D. Amarasekara, J. R. P. Jayakody, P. A. A. Perera, A Study of Wind Effects on Thermal Stability of Salt Pan Solar Ponds. Proceedings of the 18th Technical Session of the Institute of Physics - Sri Lanka, March 2002.
P. A. A. Perera , C. D. Amarasekara, J. R. P. Jayakody, M. A. Punyasena., Daytime Variation of Temperature and Salinity Profiles in Large-Area Saltpan Solar Ponds at Palavi, Sri Lanka. Proceedings of the 18th Technical Session of the Institute of Physics - Sri Lanka, March 2002.
J. R. P. Jayakody, M. A. Punyasena, P. A. A. Perera, C. D. Amarasekara, M. A. S. Kumarasinghe: Construction and Filling of a Large-area Deep-tank Solar Pond for Harnessing Solar Energy: Annual Research Symposium, Faculty of Graduate Studies, University of Kelaniya, 2002.
P. A. A. Perera, C. D. Amarasekara, J. R. P. Jayakody, M. A. Punyasena, A Study of Daytime Variation of Convective and Non-Convective Zones in Salt Pan Solar Ponds. Annual Research Symposium, Faculty of Graduate Studies, University of Kelaniya, 2002.
M. A. Punyasena, C. D. Amarasekara, J. R. P. Jayakody, P. A. A. Perera, Construction and Commissioning of a Large-area Salt-gradient Solar Pond at Palatupana Salterns in Southern Sri Lanka. Proceedings of the 19th Technical Session of the Institute of Physics - Sri Lanka, March 2003.
N. W. K. Jayatissa, M. A. Punyasena: Construction and Performance-analysis of a Solar Light Unit for Efficient Use of Day Light. Annual Research Symposium at Faculty of Graduate Studies of University of Kelaniya. (2008) 124.
N. W. K. Jayatissa, R. Attalage, P. S. Hewageegan, P. A. A. Perera: Optimization of Thermal Insulation of a Small-scale Experimental Solar Pond. Sri Lankan Journal of Physics 13 (1) (2012) 49-57.
B. J. Falaye, K. J. Oyewumi, T. T. Ibrahim, M. A. Punyasena, C. A. Onate: Bound state solutions of the Manning-Rosen potential. Can. J. Phys.104 (2013) 98-104.

Patents and Inventions

Life Fellow Member, Institute of Physics in Sri Lanka (IPSL)

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