Abstract
Decay paths, half-lives, and excitation energies of the bandheads of the neutron-deficient nuclei , , and have been established for the first time. Gamma-ray transitions, X-rays, and internal conversion electrons have been observed, allowing internal-conversion coefficients to be measured and reduced transition probabilities to be extracted. These results elucidate the low-lying single-quasiparticle structures and give the energy level spacings between the , , and quasineutron states for all three nuclei. Moreover, ground-state spin assignments have been made for the first time, along with the measurement of the -decay branching ratio for . The decay paths of the bandheads were followed by favored decays, indicating that all three nuclei have the same ground state.
10 More- Received 29 October 2009
DOI:https://doi.org/10.1103/PhysRevC.81.014306
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