Doppler shift attenuation lifetime measurements have been carried out
for the 3qp and isomeric rotational bands in Y-83 using the reaction (
Ni(Si,3p))-Ni-58-Si-28. While the transitional quadrupole moments in t
he 3qp bands are slightly lower than in the 1 qp bands, we found evide
nce for a strong reduction in \Q(t)\ for the isomeric band.