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Gamow-Teller Strength from the 76Se(n,p)76As Reaction: Implication for the Double Beta Decay of 76Ge

Helmer, R.L.; Punyasena, M.A.; Abegg, R.; Alford, W.P.; Celler, A.; El-Kateb, S.; Engle, J.; Frekers, D.; Henderson, R.S.; Jackson, K.P.; Long, S.; Miller, C.A.; Olsen, W.C.; Spicer, B.M.; Trudel, A.; Vetterli, M.C. (Physical Review C, 1997)

Cross sections have been measured up to 35 MeV excitation for the 76Se(n,p)76As reaction at five laboratory angles between 0� and 15�. The incident neutron energy was 198 MeV. The distribution of Gamow-Teller (GT) strength ...

Band Edge Shifts of p-type Copper Indium Diselenide Electrodes in Aqueous Electrolytes

Siripala W; Vedel, J.; Lincot, D.; Cahen, D. (Applied Physics Letters, 1993)

Impedance measurements were used to evaluate the relative band edge positions of single crystalp?CuInSe2electrodes in various aqueous electrolytes, by measuring the extrapolated flatband potentials, V fb. We find that V ...

A Photoelectrochemical Investigation of n- and p-type semi�conducting behaviour of Copper Oxide Films

Siripala W; Kumara K P (Semiconductor Science and Technology, 1989)

Copper(I) oxide films were prepared on copper substrates by exposing them to solutions containing Cu2+ ions, and it was observed that the photoresponse of these films electrodes in a photoelectrochemical cell is both n- ...

Characterization of Surface States at a Semiconductor Electrolyte Interface by Electroreflectance Spectroscopy

Tomkiewicz M; Siripala W (Journal De Physique, 1983)

Supra bandgap and subband gap Electrolyte Electroreflectance is being used to characterize surface states at semiconductor liquid interfaces. The surface states can manifest themselves either through direct optical transitions ...

High efficient multi-junction photovoltaic cell based on indium-phosphide-Oxide, indium-gallium-arsenide and indium-gallium-antimony

Abdulla-Al-Galib, M.; Barua, S.; Salam, K.M.A.; Awal, M.A.; Wijesundera, R.P. (International Conference on Advances in Electrical Engineering (ICAEE-2011, 2011)

An inexpensive universal serial bus interfaced home automation system

Wijesundera, R.P.; Abeyratne, M.D.G.M.; Kalupahana, I.U.; Buddhika, W.A.P.; Kumara, S.D.; Jayatissa, N.W.K.; Harambearachchi, J.C.; Kalingamudali, S.R.D. (IET Sri Lanka Network-19th Annual conference, 2012)

Correlation between the green-like coloration and the structural and electronic properties of celadon glazes

Hidaka, M.; Takeuchi, K.; Wijesundera, R.P.; Kumara, L.S.R.; Watanabe, M.; Choi Jae-Young; Sung, N.E. (Cer�mica, 2012)

Methods for improving n-type photoconductivity of electrodeposited Cu2O thin films

Kalubowila, K.D.R.N.; Gunawardena, L.K.A.D.D.S.; Wijesundera, R.P.; Siripala, W. (Semiconductor Science and Technology, 2014)

ITO/ u-Cu2O/ p-Cu2S thin film solar cell

Perera, L.D.R.D.; Wijesundara, R.; Jayasuriya, K.D.; de Silva, K.T.L.; Jayanetti, J.K.D.S. (Srilanka association for the advancement od science proceedings of 53rd Anuual Session., 1997)

A study of Peltier effect in a thermoelectric couple of n-type cuprous oxide and p-type cuprous sulfide semiconductors

Abeywarna, U.K.; Gunawardana, E.P.P.C.; Bopege, D.N.; Rajapakse, R.R.M.; Wijesundera, R.P.; Siripala, W. (Proceedings of the Annual Reaserch symposium, 2003)

Growth of(Cu2O)1-x(CuO)x thin films for PV applivations

Kalubowila, K.D.R.N.; Wijesundera, R.P.; Siripala, W. (Srilanka association for the advancement od science proceedings of 69th Anuual Session., 2013)

Research in Buddhism and Physics

Galmangoda, Sumanapala; Hewageegana, P. (Research in Buddhism and Physics, )

Theory of Perception According to Buddhism everything in the world is impermanent. Everything is momentary. But there is a difference of life-span of mind and matter. The life-span of consciousness is termed as mind-moment ...

Investigation of temperature and density profile of brine in evaporating salt pans at Palavi in north-western Sri Lanka

Hewageegana, P.; Amarasekara, C.D.; Jayakody, J.R.P.; Punyasena, M.A. (2001)

Measurements of temperature and density variations with depth in salt pans having a stable salinity gradient are presented. The density variation of brine has been correlated to the temperature variation with depth. The ...

Construction and commissioning of a large area solt gradient solar pond at Palatupana salterns in southern Sri Lanka

Punyasena, M.A.; Amarasekara, C.D.; Perera, P.A.A. (2003)

Solar ponds are large-scale solar energy collectors with integrated thermal energy storage. The concept of collecting and storing solar energy using non-convective salt gradient solar ponds has been known for some time. ...

NMR Studies of Mass Transport in High-Acid-Content Fuel Cell Membranes Based on Phosphoric Acid and Polybenzimidazole

Jayakody, J.R.P.; Chung, S.H.; Durantino, L.; Zhang, H.; Xiao, L.; Benicewicz, B.; Greenbaum, S.G. (Journal of Electrochemical Society, 2007)

Mass-transport studies of phosphoric acid (PA)-doped meta-polybenzimidazole (PBI) fuel cell membranes are described. In this study, the fundamental differences in transport properties between m-PBI/PA membranes prepared ...

Two new siloxanic proton conducting membranes: Part II. Proton conductivity mechanism and NMR study

di Noto, V.; Vittadello, M.; Kalfan, A.N.; Greenbaum, S.G. (Electrochimica Acta, 2005)

The synthesis and structural characterization of two types of membranes with formulas {Si(CH3)3O[Si(CH3)HO]21.26-[Si(CH3)((CH2)3SO3H)O]1.8-[Si(CH3)((CH2)3Si(CH3)2O-)-O]14-Si(CH3)3}n (A) and {Si(CH3)3O[Si(CH3)HO]21.26-[Si ...

Ormosil/Sulfonated Polyetheretherketone-Based Hybrid Composite Proton Conducting Membranes

Licoccia, S.; Vona, M.L.D.; Epifonia, A.D.; Marani, D.; Vittadello, M.; Greenbaum, S.G. (Journal of Electrochemical Society, 2006)

A modi?ed silane bearing a sulfonic acid function (?sulfonated diphenylsilanediole, SDPSD?)was prepared and characterized. The resulting ormosil was mixed with sulfonated polyetheretherketone ?SPEEK? with high degree of ...

Studies of Water in Nafion Membranes: Using Deuteron and Oxygen?17 Nuclear Magnetic Resonance, and Dielectric Relaxation Techniques

Chen, R.S.; Jayakody, J.R.P.; Greenbaum, S.G.; Pak, Y.S.; Xu, G.; McLin, M.G.; Fontanella, J.J. (Journal of Electrochemical Society, 1993)

Deuteron and oxygen-17 nuclear magnetic resonance measurements and dielectric relaxation studies of Nafion-117 membranes with variable water content (approximately 5-18% by weight) have been carried out. Glassy behavior ...

Pentacene acoustic charge transfer devices

Kalingamudali, S.R.D.; Shao, H.; Woods, R.C.; Neelam, R.; Singh, V. (2011)

Acoustic charge transfer (ACT) devices use a charge transfer channel formed from a thin-film of the organic semiconductor pentacene deposited on the surfaces of either LiNbO(3) 0r Bi(12)GeO(20)substrates. Organic semiconductor ...

Construction of a Near Ideal Nanoammeter

Wijesundera, R.P.; Kalingamudali, S.R.D.; Jayasuriya, K.D. (1998)

A near ideal ac/dc nanoammeter was constructed using two operational amplifiers (op-amp) and a voltmeter. Small currents were converted into a voltage by the first op-amp and this was amplified into a larger voltage by ...

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