Abstract
Absolute cross sections for elastic scattering, , and inelastic scattering, , from the first excited state were measured for proton bombarding energies between 3.7 and 5.67 MeV at laboratory angles of 67.5°, 85.9°, 105.8°, 123.7°, 135.0°, and 157.5° in order to determine level parameters of excited states in . Complete angular distributions were measured at selected energies in this region and limited angular distributions were obtained for inelastic scattering, , from the second excited state, and for the reaction. Scattering anomalies were observed at proton bombarding energies of 3.88, 3.90, 3.99, 4.13, 4.20, 4.575, 4.58, 4.63, 4.74, 4.78, 4.86, 5.02, 5.18, and 5.55 MeV, corresponding to excited states in at 10.91, 10.93, 11.01, 11.14, 11.21, 11.56, 11.565, 11.61, 11.71, 11.75, 11.83, 11.97, 12.12, and 12.47 MeV. Resonances were analyzed using a multilevel -matrix approximation. Qualitative and semiquantitative fits were made to these data and resonance parameters were determined for many of the observed levels.
- Received 5 September 1968
DOI:https://doi.org/10.1103/PhysRev.179.1047
©1969 American Physical Society