Abstract
A radioactive beam of was produced by the fragmentation of a 70 MeV/nucleon beam in a Be target. -delayed -ray studies were performed using two thin plastic scintillators and two large-volume Ge detectors following implantation of the nuclei into a foil of a collection wheel apparatus. A 1296-keV -ray transition with a half-life of 3.4(7) s was identified and has been attributed to the decay of the isomeric state in The relative population of the low-spin isomer to the known high-spin isomer was determined to be 6:1 for the production of via fragmentation of based on an upper limit of 36% extracted for the -decay branch to the ground state of The half-life and branching of the decay is discussed in light of possible two particle–two hole excitations in the low-energy structure of
- Received 15 March 1999
DOI:https://doi.org/10.1103/PhysRevC.60.054307
©1999 American Physical Society