Direct neutron capture cross section on Ge 80 and probing shape coexistence in neutron-rich nuclei
Results are presented from the first neutron-transfer measurement on Ge80 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 Ge81 are determined, and the neutron capture cross section on Ge80 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 Ni78 are discussed.
Publication Source (Journal or Book title)
Physical Review C
Ahn, S., Bardayan, D., Jones, K., Adekola, A., Arbanas, G., Blackmon, J., Chae, K., Chipps, K., Cizewski, J., Hardy, S., Howard, M., Kozub, R., Manning, B., Matoš, M., Nesaraja, C., O'Malley, P., Pain, S., Peters, W., Pittman, S., Rasco, B., Smith, M., & Spassova, I. (2019). Direct neutron capture cross section on Ge 80 and probing shape coexistence in neutron-rich nuclei. Physical Review C, 100 (4) https://doi.org/10.1103/PhysRevC.100.044613