Abstract
Using on-line mass separation has been identified and its half-life determined to be 2.91 ± 0.15 sec. The activity was produced by the reaction and by the decay of 57-sec . The decays primarily to the ground state of and also to excited states at 678.9 and 1219.1 keV. From positron measurements, a decay energy of MeV is assigned to . rays of 540.2 and 678.9 keV are observed in this decay and are assigned to depopulate levels in at 1219.1 and 678.9 keV, respectively. The former is a new level with a probable spin-parity of either or . From the values, a spinparity assignment of is deduced for the ground state of , which is interpreted to have a configuration of []. A decay energy of MeV observed from activity produced by the + reaction is assigned to .
NUCLEAR REACTIONS , MeV; and , MeV. Natural Rh targets and enriched Pd targets. RADIOACTIVITY , ; measured , , , , coin., end point; deduced levels, , , ; deduced ground state , , ; Ge(Li) detectors and plastic scintillators; mass separated sources.
- Received 8 September 1975
DOI:https://doi.org/10.1103/PhysRevC.13.1601
©1976 American Physical Society