GAMMA-RAY TRANSITIONS BETWEEN EXCITED-STATES IN ER-168

The intensities and reduced probabilities of the E1, E2, M1 and M2 tra nsitions between excited states in Er-168 are calculated within the qu asiparticle-phonon nuclear model. The intensities and reduced probabil ities are in reasonably good overall agreement with experimental ones. It is shown that the contribution of the two-phonon configuration to the wavefunction of excited states with energy below 2 MeV is small. T he wavefunction of the first K-upsilon(pi)=4(1)(+) state contains the largest double-gamma vibrational term equal to 30%. The dominance of t he decay from the first exited O-1(+) state to the gamma vibrational s tate over that to the groundstate band is in agreement with the experi mental data. The specific features of the calculated B(E1), B(E2) and B(M1) values and the relative intensities of the gamma-ray transitions are discussed.