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                       On sabbatical leave for a period of 2 years at the Faculty of Allied Health Sciences, Department of

                                                                     Radiography / Radiotherapy, University of  Peradeniya.

Name:  Professor Rohini Hewamanna

Area of specialization: Radiobiology

Research Interests:

• Environmental radioactivity- Radioactivity in different environmental compartments and its effects.

• Application of nuclear techniques in environmental monitoring with reference to heavy metals

Positions Held:

• Member of the Advisory Committee to the Atomic Energy Authority (AEA)
  1991-1993

• Member of the Board of the Atomic Energy Authority 1993 to 2005

• Member of the Examination Committee for the National Training & Certification of Non Destructive Testing Personnel conducted by the AEA 1996 to 2005

• Head Radioisotope Center 1992-1996

• Course Director M. Sc. Nuclear Science 1996/97, 2001/2002

• Member of the National Science Foundation Committee on Chemical and Earth Sciences.

• Coordinator of the Radioisotope Centre 2000

• Head Dept. of Nuclear Science 2001

• Chairman Atomic Energy Authority 2003-2005

Publications from 2000 onwards:

1. C. S. Sumithrarachchi, A. S. Amerasekera, R. Hewamanna and
   S. R. D. Rosa (2000)
   Evaluation of gamma radiation exposure in a room from construction material  Sri Lankan Journal of Physics 1 ,73-79.

2. R. Hewamanna, C. S. Sumithrarachchi, P. Mahawatte, H.L.C.Nanayakkara, H. C. Ratnayake (2001)

          Natural radioactivity and gamma dose from Sri Lankan clay bricks used                 
          in   building   construction
          Int. J. Applied Radiation and Isotopes 54 ,363-369

    3.  C. S. Sumithrarachchi and R. Hewamanna,  2001,
         Terrestrial gamma dose rates along one of the coastal highways in Sri Lanka

         Sri Lankan Journal of Physics 2 1-6.

    4.   R.Hewamanna,  Anuraadhai N., and R.K.S.Fernando  2004, Analysis of Five Trace Elements in

         Medicinal Plants used in Ayurvedic medicine to Control Diabetes.

         J.Trop. Med. Plants 5 (2)211-215

    5.    P.Mahawatte, K.R.Dissanayake and R.Hewamanna 2006,  Elemental concentrations of some Ayurvedic drugs using 

           energy dispersive XRF  

            J.of Radioanalytical and Niuclear  Chemistry 270 3, 657-660         

    6.    A.Thantilage, R.Hewamanna, R.Somadeva

            A Metallurgical Investigation of some Ancient Coins found in Mantai and Pidurangala- Sri Lanka  in press

Communications from 2000 onwards

1. C. S. Sumithrarachchi and R. Hewamanna
   Gamma equivalent dose to a Galle Road commuter
   Proc. of the 56^th Annual Sessions of the SLAAS.2000

2. T. H. S. Shantha, C. S. Sumithrarachchi and R. Hewamanna
   In-situ gamma spectroscopy an alternative method to evaluate external effective radiation dose
   Proc. of the 56^th  Annual Sessions of the SLAAS.2000

3. V. A. Waduge & R. Hewamanna
   Study on radioactivity levels in the Kelani River outfall sediments
   Proc. of the 56^th   Annual Sessions of the SLAAS.2000

4. M. C. S. Seneviratne, S. Peiris, C. S. Sumithrarachchi and R. Hewamanna
   A statistical evaluation of aerosol data collected from Colombo city limits
   Proc. of the 56^th Annual Sessions of the SLAAS.2000

5. P. Mahawatte, K. R. Dissanayake and R. Hewamanna
   Neutron activation; A simple technique to measure mercury and arsenic in Ayurvedic drugs
   Proc. of the 56^th   Annual Sessions of the SLAAS.2000

6. M.Abeyratne, W.K.P.K.Fernando, R.Hewamanna and C.S.Sumithrarachchi

          Estimating the thermoluminescence dates of an ancient terracotta site at Rajangana

          Proc. of the57th Annual Sessions of the SLAAS 2001

    7.   R.R. Weerasiri and R.Hewamanna, Study of radionuclides in the Hambanthota saltern Proc. of the

          59th  Annual Session of the SLAAS 2003

    8.    Hewamanna, R.,  Mahawatte, P.

Growth of  Nuclear Analytical Techniques over Two Decades at the Department of Nuclear Science, University of Colombo. 10th Anniversary International Symposium.  4th - 8th July 2006  Sabaragamuwa  University of Sri Lanka.

Supervision of M. Sc. research  (M. Sc. awarded)

• Determination of Multi Elements in some plants by XRF spectrometry-1996

• Analysis of Pb from X ray absorptiometry & comparison of measurement sensitivity with EDXRF and AAS-1999

• A study of natural radioactivity in different types of bricks - 1999

• Evaluation of external effective radiation dose with thermoluminescent dosimeters and in-situ gamma ray spectrometry from residents living in a selected site at Lansiyawatte , Hendala –1999

• Study of natural and man made radioactivity levels in coastal sediment collected from the Kelani River outfall by gamma spectroscopy-1999

• Trace element analysis of some herbal plants used in the control of Diabetes mellitus by ED XRF-1999

• Study of radionuclides in the Hambanthota saltern 2003

• Soil Erosion studies at Kalatuwawa using Cs-137 measurement 2005

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