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

High-precision measurements of the relative intensities of KX- and γ-rays associated with the decay of the isomer state in ¹⁷⁷Lu (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 ¹⁷⁷Lu and ¹⁷⁷Hf confirms the consistency of the obtained data. The intensities of the γ- and β—decay branches of the isomer and the internal conversion coefficients of the K-forbidden transitions are determined.