1. Sri Lanka Atomic Energy Board , No. 60/460, Orugodawatta, Wellampitiya 10600 , Sri Lanka , Tel.: +94 77 341 0388, Fax: +94 11 25 33448,
2. Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT) , P. O. Box 3640, 76021 Karlsruhe , Germany
3. Faculty of Electrical Engineering and Computer Science , Lublin University of Technology , 38a Nadbystrzycka Str., 20-618 Lublin , Poland
4. National Institute of Fundamental Studies , Hantana Road, Kandy , 20000 , Sri Lanka