Direct neutron capture cross section on 80Ge and probing shape coexistence in neutron-rich nuclei
S. Ahn, D.W. Bardayan, K.L. Jones, et al., PRC 100 044613
Results are presented from the first neutron-transfer measurement on 80Ge using an exotic beam from the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory. Newly measured spins and spectroscopic factors of low-lying states of 81Ge are determined, and the neutron capture cross section on 80Ge was calculated in a direct-semidirect model to provide a more realistic (n,γ) reaction rate for r-process simulations. Furthermore, a region of shape coexistence around N≈50 is confirmed and implications for the magic nature of 78Ni are discussed.
