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On the photon self-absorption correction for thin-target-yields vs. thick-target-yields in radionuclide production
Zeev B Alfassi1, Elisa Persico, Flavia Groppi
1Department of Nuclear Engineering, Ben Gurion University, Beer Sheva, Il-84106, Israel. alfassi@bgu.ac.il
Abstract:
In the experimental determination of activity of low gamma energy emitters by HPGe spectrometry, after cyclotron irradiation of thick targets of high Z elements, it is mandatory to introduce a correction for gamma-ray self-absorption in the target. The amount of this correction is substantial in order to provide a statistically acceptable agreement with the thick-target-yield data obtained by integration of the experimental thin-target-yield data that are very slightly affected by self-absorption instead.
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