Abstract
The decay of Ni, Co, Fe, and Mn was investigated via the fragmentation of a Ni primary beam with an energy of 68.6 MeV/u. The proton- coincidences of Ni -delayed proton emission were observed. Based on the analysis of the proton- coincidence events, it was inferred that the previous assignment of the excitation energy for the isobaric analog state in Co may be problematic. The half-lives of these nuclei were obtained, in which the uncertainty of Co half-life was reduced by a factor of 3. The half-lives were evaluated and used as inputs of nucleosynthesis calculations of the rapid proton-capture process in an x-ray burst.
- Received 28 September 2012
DOI:https://doi.org/10.1103/PhysRevC.87.024312
©2013 American Physical Society