H. Savajols et al., LIFETIME MEASUREMENTS OF SUPERDEFORMED BANDS IN GD-148-149 AND DY-152- EVIDENCE FOR STRUCTURE-DEPENDENT ELONGATIONS, Physical review letters, 76(24), 1996, pp. 4480-4483
Precise level lifetimes have been measured for various superdeformed b
ands in Gd-148,Gd-149 and Dy-152 with the Doppler-shift attenuation me
thod From the derived quadrupole moments, Q(0), we find large differen
ces in deformation between the yrast bands and some excited bands in t
he gadolinium isotopes. Moreover, two of the excited Gd bands and the
Dy-152 yrast band, which have identical moments of inertia, have diffe
rent elongations, supporting the picture that alignment and deformatio
n effects cancel in identical bands.