QUASI-PARTICLE DRIVING EFFECT ON SHAPE OF NB-87 SOFT NUCLEUS

The high spin states of Nb-87 have been studied by using the Ni-58(S-3 2,3p)Nb-87 reaction at beam energy 95-105 MeV and the reaction Ni-58(C l-35,2p alpha) aat 124 MeV. gamma-gamma coincidence relations, angular distributions of gamma-rays, excitation functions and DCO ratios were measured. High spin states in Nb-87 have been established up to spin of 37/2 (H) over bar and excitation energy of 7 MeV. CSM calculation w as carried out with parameters of configuration dependence of nuclear shape. The nature and configuration of every band in Nb-87 are discuss ed.