NATIONAL TECHNICAL UNIVERSITY OF ATHENS
Nuclear Engineering Section

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HIGH RESOLUTION GAMMA-SPECTROSCOPY SET-UPS

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• Ge(Li) detector, 23.8% eff, 1.97 keV FWHM at 1.33 MeV, Peak/Compton 47:1 at 1.33 MeV, in operation since 1977.
  
  
• Coaxial pure Ge detector, 33.8% eff, 1.78 keV FWHM at 1.33 MeV, Peak/Compton 66.5:1 at 1.33 keV, in operation since 1981.
  
  
• Low Energy Planar Germanium Detector (active area 2000 mm²), 341 eV FWHM at 5.9 keV, in operation since 1988.

RESEARCH WORK IN LOW LEVEL GAMMA-RADIOACTIVITY

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• 1000 samples of lignite, fly ash, bottom ash and building materials analysed for natural radioactivity.
  
  
• 300 samples of foodstuff, rain and tap water analysed for fission product radioactivity from the Chernobyl fallout.
  
  
• 2000 1cm thick surface soil samples analysed for both fission product (Chernobyl fallout) and natural radioactivity.
  
  
• 300 air filters analysed for environmental monitoring purposes.

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