title: On the photon self-absorption correction for thin-target-yields vs. thick-target-yields in radionuclide production.
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.
authors.affiliation: Department of Nuclear Engineering, Ben Gurion University, Beer Sheva, Il-84106, Israel. alfassi@bgu.ac.il
authors.forename: Zeev B
authors.initials: ZB
authors.lastname: Alfassi
authors.forename: Elisa
authors.initials: E
authors.lastname: Persico
authors.forename: Flavia
authors.initials: F
authors.lastname: Groppi
authors.forename: Mauro L
authors.initials: ML
authors.lastname: Bonardi
mesh_terms: D002138:Calibration; D017357:Cyclotrons; D005720:Gamma Rays; D011868:Radioisotopes / Q000032:analysis; D013051:Spectrometry, Gamma / Q000592:standards*
chemical_list: D011868:Radioisotopes