First identification of Zn-58 beta-delayed proton emission
PHYSICAL REVIEW C(2020)
摘要
The beta decay of Zn-57 and Zn-58 was investigated in an experiment at the National Superconducting Cyclotron Laboratory of Michigan State University. For the first time beta-delayed proton emission from Zn-58 was observed with a branching ratio of 0.7(1)%. The proton-energy spectrum allowed for probing the Gamow-Teller strength distribution above the proton-separation energy in the daughter nucleus. Moreover, the absolute branching ration for delayed-proton emission from Zn-57 was found to be compatible with 100%.
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