Abstract
The status of experimental quantum number assignments to low-lying levels of is reviewed. The use of a Compton-scattering polarimeter of limited resolution but good efficiency, in coincidence with an annular particle detector and perpendicular to the reaction symmetry axis, is described. Measurements of -ray polarization have been carried out following the reaction at 3.8 MeV and 0°. In conjunction with past experiments, the following assignments are inferred: 656 keV, ; 823 keV, ; 984 keV, ; 1309 keV, ; 1824 keV, ; and 1843 keV, (). The relation of the experimental level structure to the rotational band grouping and to the shell-model calculation of McGrory and and Wildenthal is illustrated.
- Received 18 June 1973
DOI:https://doi.org/10.1103/PhysRevC.8.1347
©1973 American Physical Society