Some properties of Lighting ground flashes observed in and around Sri Lanka, and their seasonal variations, J. P. Liyanage, D. U. J. Sonnadara, I. M. K. Fernando, A. B. Weerasekara and T. R. Ariyaratne, Sri Lanka J. of Physics 3(2002) 77-88

Physics Education in Sri Lanka – Presidential Address-17th Technical Session, Inst. of Phyiscs, Sri Lanka, (March -2001)77

Measurement of lighting peak currents in the first return stroke negative cloud-to-ground flashes, A.B. Weerasekara, D. U. J. Sonnadara, I. M. K. Fernando, J. P. Liyanage, R. Lelwala and T. R. Ariyaratne, Singapore J. of Physics, 17(2001) 37-45

Locating cloud to ground lightning flashes with simultaneous two station measurements. D.U. J .Sonnadara, A. B. Weerasekara, I. M. K. Fernando, R. Lelwala, K. P. S. C. Jayaratne, T. R. Ariyaratne, S. Namasivayam, and K. R. A.B andara, Sri Lankan Journal of Physics-Vol 1 ( 2000-March) 1

Construction of a matrix assisted laser desorption/iionisation time-of-flight mass spectrometer, R.V. Coorey, T.R. Ariyaratne, D.D.N.Barlo Daya and W.M.K.P. Wijayaratna, Sri Lankan Journal of Physics-Vol 1 ( 2000-March) 33

A high resolving power multiple reflection Matrix-assisted Laser Desorption/Ionization time-of-flight mass spectrometer, Rapid Commun. Mass Spectrom., 13, 620 (1999).

Study of the performance of direction finding station prior to the implementation of a Lightning Locating System in Sri Lanka, Ceylon Journal of Science: Physical Sciences,05 (1998) 65

A high resolving power ion selector for post source decay measurements in a reflecting time-of-flight mass spectrometer Rapid Communications in MassSpectrometry 12 (1998) 165

Kinetic Energy measurements of ions emitted from alkali halides and their mixtures in 252 Cf plasma desorption mass spectrometry, U.K.Abeywarna, R.A.Zubarev, P.Hakansson and T.R.Ariyaratne, Ceylon Journal of Science. 4 (1) (1997) 1.

Construction of a keV pulsed ion source and the measurement of damage cross sections for keV ion induced sputtering from solid targets, D.D.N.Barlo Daya, T.R.Ariyaratne, P.Hakansson, B.U.R.Sandqvist, and W.Ens. Ceylon Journal of Science, Physical Sciences. 4 (1) (1997) 23

Weighing Giant Biomolecules, T. R. Ariyaratne. Presidential Address, SLASS, Section E-1 (1996)

Fast heavy ion induced photon emission from organic solids and plasma desorption mass spectrometry. T.R.Ariyaratne, D.D.N.B.Daya, P. Hakansson and B.U.R. Sundqvist; Int. J.Mass Spect. Ion Proc. 152 (1996) 31.

On the upper mass limit of secondary ions ejected in electronic sputtering from organic solids. B.U.R. Sundqvist, T.R. Ariyaratne, W.Ens, D.Fenyo, A.Hadin, P Hakansson, G.Jonsson and S Widdiyasekara. Proc Ion Formation rom Organic Solids (IFOS IV) Munster Sep 21.23, Ed: Abenninghoven, John Wiley & Sons 1989 p 51

Study of gas scintillation drift counter as high rate X-ray detector. S. Al-dargazelli, T.R. Ariyaratne, J.M. Breare and B.C. Nandi; Nucl. Instr. and Meth 200 (1982) 341.

Charge and light gain measurements in Argon-Nitrogen mixture using a gas scintillation proportional counter. S. Al-dargazelli, T.R. Ariyaratne, J.M. Breare and B.C. Nandi; Nucl. Instr. and Meth 180 (1981) 497

Measurment of the drift velocity of electrons in an Argon-Nitrogen mixture. S. Al-dargazelli, T.R. Ariyaratne, J.M.Breare and B.C. Nandi; Nucl. And Instr. And Meth 176 (1980) 579

Study of multiwire proportional counter as a high-count rate X-ray detector. S.Al-dargazlli, T.R. Ariyaratne, J.M. Breare, B.C. Nandi and M. Varrelles; Nucl. Instr. And Meth. 156 (1978) 63.

Some properties of gridded wire chamber for X-ray detection. T.R. Ariyartne, J.M Breare and R.J Stubs; Nucl. Instr. And Meth. 152 (1978) 579.

Some properties of gridded wire chamber for X-ray detection. T.R. Ariyartne, J.M Breare and R.J Stubs; Nucl. Instr. And Meth. 152 (1978) 579.

A study of a gas scintillation multiwire proportional counter. S. Al-dargazelli, T.R. Ariyaratne, J.M.Breare and B.C. Nandi; J.Phys.D Appl.Phys. 11 (1978)1773