Abstract
The half-lives of seven nuclei have been determined in the neutron-deficient mass-70 region following their production via fragmentation of a 345 MeV/nucleon primary beam on a 740 mg/ target at the RI Beam Factory, RIKEN. The results include two new ( and ) half-lives and a more precise measurement for the ground-state half-life of . The new results are discussed with reference to previously published calculations that predict the location of the proton dripline in the light Sr and Y region of the nuclear chart. In addition, differences in the ground-state structure of and are discussed with the aid of density functional theory calculations. These provide a possible explanation for why undergoes proton decay while the -conjugate nucleus predominantly undergoes decay.
1 More- Received 2 July 2019
DOI:https://doi.org/10.1103/PhysRevC.100.044311
©2019 American Physical Society