Abstract
The decay of the drip-line nucleus gives important information on key astrophysical resonances in , which are relevant to the onset of the rapid proton capture process. A detailed -decay spectroscopic study of was performed by a continuous-implantation method. A detection system was specially developed for charged-particle decay studies, giving improved spectroscopic information including the delayed proton energies, the half-life of , the excitation energies, the branching ratios, and the values for the states in populated in the decay of . A new proton branch was observed and the corresponding excited state in was proposed. The large isospin asymmetry for the mirror decays of and was also well reproduced. To resolve the long-standing problem about the astrophysically interesting 2645 keV resonance in convincingly, a higher-statistics measurement may still be needed.
- Received 19 October 2016
DOI:https://doi.org/10.1103/PhysRevC.95.014314
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