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No: 1010
Conference: Nuclear Energy for New Europe 2009
Title: Decreasing of the detection limit for gamma-Spectrometry with the influence of sample treatment
Theme: Radiation and Environment
Author(s): M. Karami
Contact : M. Karami
E-mail: mkarami_3@yahoo.com
Address: Faculty of Engineering and Technology, Science & Research Campus, Islamic Azad University
Poonak-Hesarak, Tehran
Country: Iran
 
In this study the ash method has been applied for environmental sample treatment in order to decrease of the detection limit in gamma-ray spectrometry for low level radioactivity measurements. Detection limit in gamma ray spectrometry is the smallest expectation value of the net counting rate that can be detected on given probabilities.
The environmental test samples have been changed into ash using a suitable oven. The heating were made under controlled temperature to avoid the escape of some radionuclides such as radiocaesium. The ash samples were measured by high resolution gamma-ray spectrometry system.