M1‐E2 mixing ratios of gamma‐ground transitions in 168Er

The L subshell ratios of four γ‐g transitions in 165Er have been measured with the high resolution, iron, β‐spectrometer at the Institut Laue‐Langevin. The reduced M1‐E2 mixing ratios are not consistent with the values predicted by Warner on the basis of IBA‐1. It may be possible to explain the results in IBA‐2 in terms of the ΔK‐1 mixing of the gamma‐band and the pure antisymmetric states such as the 1+ isovector mode.