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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-21 19:56 |
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Conference: Bucharest University Faculty of Physics 2008 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Gamma-ray self-attenuation corrections in environmental samples
Authors:
Elena Robu, Octavian Sima
Affiliation:
Physics Department of Bucharest University
E-mail
elena_robu@hotmail.com
Keywords:
Gamma-ray spectrometry, self-absorption corrections
Abstract:
Gamma-ray measurements is a common method used in radiation environmental monitoring worldwide. Differences in reference sample and bulk samples involve differences on detection efficiency and correction factors should be applied. Self-absorption in the sample depends on a number of factors including sample composition, density, sample size and gamma-ray energy. Measurements of relative photon transmission through both reference and unknown bulk sample allow to estimate the degree of absorption by the sample and to improve measurement data assessment. Self-absorption correction factors have been calculated for soil, grass and liquid sources with different densities and geometries.
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