Recent studies of vibrational excitations in deformed nuclei have led to a
close reinvestigation of low-lying K-pi = 0(+) excitations in deformed nucl
ei, We have measured lifetimes of levels in three K-pi = 0(+) bands at 1199
, 1434 and 1772 keV. The results point to the observation of a collective K
-pi = Of band at 1772 keV that decays to the band at 1199 keV with collecti
ve transitions of 5-10 W.u.