Aristotle University of Thessaloniki
Atomic and Nuclear Physics Laboratory
Thessaloniki 54124, Greece

Tel. +30 2310 998005
Fax +30 2310 998058

Research interest:

Our current involvement and collaboration with Dr. Braulio Jiménez-Velez at the Center for Environmental & Toxicological Research of the Medical Sciences Campus of the University of Puerto Rico; is to study Radionuclide from coal power plants, urban areas and in Saharan dust particles in Puerto Rico.Prof. Dr. Constantin Papastefanou, is an outstanding scholar and researcher in the field of Nuclear Physics working as professor in the Department of Physics, at the Aristotle University of Thessaloniki, AUTh in Thessaloniki, Northern Greece. Prof. Papastefanou has been working as physics educator, since 1970. He was born in Ambeli, Serres Prefecture, Northern Greece, in 1944. He graduated from the Department of Physics, Faculty of Science, in 1968 and obtained his Ph.D of the Faculty of Science, Aristotle University of Thessaloniki (AUTh), in 1976. He is the head of the Environmental Radioactivity Laboratory in the Physics Department, AUTh.He is an Associate researcher in Elementary Particle or High Energy Physics and in Health and Safety Division at CERN (European Nuclear Research Center), Geneva, Switzerland, from 1977 through 1984. Associate researcher in Environmental Sciences Division in Oak Ridge National Laboratory (ORNL) at Oak Ridge, Tennessee, USA, in 1984-1985 and 1987, worked on the radioactive aerosols, particularly on radon decay product aerosols, research sponsored by the Department of Energy (US DOE).

Research Activities:

  1. Radioecology: Radioactivity in Coal Power Plants (CPP)*: U-Ra, Th, Rn and Rn Progeny in Coal Mines, Fly Ash Depository, CPP Environment.
  2. Radioecology: Airborne Radioactivity and Dry Deposition of Airborne Pollutants to Ecosystems: 218Po, 214Pb- 214Bi, 212Pb-212Bi, 210Pb- 210Bi, 7Be and 35S.Radioactive Aerosols in Ambient Air.
  3. Radioactivity of Building Materials: U-Ram Th, and 40K. Radiation Exposure.
  4. Radon and Rn Progeny in Dwellings. Induced Doses to Lungs.
  5. Radioactivity in Caves: U-Ra, Th, 40K. Radiation Exposure.
  6. Subsurface Radon Associated with Earthquakes (Techniques and Measurements).
  7. Radioactivity in Soils, Vegetation Phosphates and Phosphate Fertilizers, Minerals (Uranium Ores), etc. : U-Ra, Th, 40K, 137 Cs.
  8. Radioactivity in Waters, Natural Waters, Tap Water : Ra, Rn and Rn Progeny.
  9. Radioactivity in Air Atmospheres: Ra, Rn and Rn Progeny.
  10. Chlorine Isotopes: 39Cl, 38Cl, 37Cl, in the Lower Atmosphere by Cosmic Ray Muons.
  11. eryllium-7 in Ground Level Air.
  12. Radioactivity of Lichens and Mosses. Lichens and Mosses as Bio-indicators of Airborne Radionuclide.
  13. Uranium Deposition in Bones and Fossils.
  14. Radioactivity of Fallout from the Chernobyl Reactor Accident. Post-Chernobyl Radiation Monitoring. Tropospheric Fallout Injections into the Atmosphere.
  15. Radioactivity Induced in Waters of Cooling System of High Energy Particle Accelerators.
  16. Uranium in Dental Porcelain Powders. Induced Doses to Oral Mucosa.
  17. Radioactivity in Cigarette Smoke Issues: 218Po, 214Pb, 214Po, 210Pb, 210Po.
  18. Radioactive Aerosols: 214Pb, 212Pb, 210Pb-210Bi, 7Be. Sulfate Aerosols. Nitrate Aerosol.

Radioactivity in the Atmospheric, Aquatic and Terrestrial Environment

Radioactive Aerosols
Radon decay product aerosols
Beryllium-7 aerosols (of cosmogenic origin)
Fission product aerosols

Radon indoors/outdoors
In dwellings
In caves
In thermal spring waters
In karstic systems
In active faults (in association with earthquakes)

Radioactivity of coals and fly ashes
Radioactivity of building materials
Radioactivity of lichens and mosses
Radioactivity and dating of fossils (fossil bones)
Radioactivity associated with the operation of coal-fired power plants
Radioactivity associated with the operation of phosphate rock processing plants
Radioactivity associated with the operation of High Energy Particle Accelerators
Radioactivity associated with the Chernobyl Reactor Accident

Applied Technologies
Gamma Spectrometry
Alpha and Beta Counting Techniques
Radon measurement techniques
Neutron Activation Analysis