Abstract
Several low-lying excited states in and were identified for the first time following EC/ decay of and , respectively, using -ray and conversion electron spectroscopy at the CERN isotope separator on-line (ISOLDE) facility. The EC/ branch from was measured to be . The excited states of the daughter nuclei are understood in terms of the odd nucleon coupling to the neighboring even-even core. The neutron single-particle energies of the orbital relative to the ground state in , and the orbital relative to the ground state in , were determined to be 31.4(2) and 5.7(3) keV, respectively. We tentatively identify a isomeric level at 657.1(5) keV in . The systematic behavior of the and levels is also discussed.
1 More- Received 9 December 2009
DOI:https://doi.org/10.1103/PhysRevC.81.024322
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