Abstract
The properties of high-spin states in and have been studied with the and reactions. In-beam measurements with Ge(Li) and Si(Li) detectors of -ray excitation functions, coincidences, -ray angular distributions, and pulsed beam- timing spectra were made to establish decay schemes, level energies, spin-parity assignments, -ray multipolarities, and isomeric lifetimes. All of the high-spin states involving the , , and orbitals as well as other more complicated states were identified. In particular, the theoretically predicted isomeric states in and were found: the state in is at 2035 keV with a μsec, and the state in is at 3167 keV with a μsec. The experimental energy levels and values obtained for these nuclei as well as those of other nuclei are compared with recent theoretical work of Gloeckner et al. The effective charges for the mass-90 region are discussed.
NUCLEAR REACTIONS , , MeV, pulsed beam; measured coincidence; deduced levels in and ; measured ; deduced , , branching ratio, , , effective charges. Natural target, Ge(Li) and Si(Li) detectors.
- Received 17 December 1975
DOI:https://doi.org/10.1103/PhysRevC.13.1900
©1976 American Physical Society