Gamma-ray energies in the decay of ³⁸Cl

This is the author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Elsevier and can be found at: http://www.journals.elsevier.com/applied-radiation-and-isotopes/.In order to resolve a long-standing discrepancy of some 30 standard deviations between the two most precise previously reported values of the γ-ray energies in the ³⁸Cl decays, we have undertaken a new precision measurement of the decay energies using a variety of different sources for energy calibration. The deduced energies from the present work are 1642.668±0.010 and 2167.395±0.010 keV. These results agree very well with one of the previous reports and disagree with the other