Deformation studies at high spins in γ-soft 179Re nucleus

The nuclear shape studies are done for different quasiproton bands in 179Re nucleus through lifetime measurement using recoil distance Doppler shift technique. The deformation driving property of the low K, h9/2[541]1/2- intruder band and the stretching property of the high K, d5/2[402]5/2+ and h11/2[514]9/2- bands are discussed. The average quadrupole moment obtained from these measurements for the h9/2 configuration (Qt∼6.5 e b) is found to be about 16% higher than the average quadrupole moment (Qt∼5.6 e b) for the d5/2 and the h11/2 configurations. The higher value of quadrupole moment for the low K=1/2, h9/2 band as compared to the high K=9/2, h11/2, and K=5/2, d5/2 bands indicates its deformation driving property. The cranked Hartree-Fock-Bogoliubov and the microscopic Hartree-Fock calculations are done for these bands and are compared with the experimental observations