Anomalous conversion of the 19. 38-keV E1 transition in /sup 171/Yb

Measurements on the electron conversion spectra of /sup 171/Lu were performed. The observed anomaly in L/sub I//L/sub II/, L/sub I//L/sub III/, M/sub I//M/sub II/, and M/sub I//M/sub III/ ratios is discussed considering possible explanations and their validity.