Studying the low-energy region of the 177m Lu gamma spectrum

Abstract

High precision measurements of the relative intensities of KX and γ rays associated with the decay of the isomer state in 177 Lu (T 1/2 = 160.44 days) are performed using a γ spectrometer that incorporates four different types of semiconductor detectors. Detailed analysis of the balance of intensities of the excited levels in 177 Lu and 177 Hf confirms the consistency of the obtained data. The intensities of the γ and βdecay branches of the isomer and the internal conversion coefficients of the K forbidden transitions are determined.