MULTI-QUASI-PARTICLE POTENTIAL-ENERGY SURFACES

Diabatic-blocking calculations, with inclusion of gamma-deformation, a re performed for the first time. Significant configuration dependence is found for multi-quasiparticle potential-energy surfaces. The calcul ations of quasiparticle energies require a renormalised pairing streng th which includes shape and blocking effects in reproducing experiment al odd-even mass differences. The detailed excitation energies known i n W-178 are well reproduced. For the Os-182 K-pi = 25(+) isomer, the c alculation shows \gamma\ approximate to 10 degrees and the obtained qu adrupole moment agrees with the measured value. (C) 1998 Elsevier Scie nce B.V. All rights reserved.