Abstract
Excited states in have been observed by measuring the differential elastic scattering cross section of for proton energies from 2.6 to 5.0 Mev. Resonances were observed at proton energies of 2.743, 2.87, 3.105, 3.20, 3.78, 3.980, 4.04, and 4.14 Mev, corresponding to excited states in at 10.092, 10.21, 10.428, 10.52, 11.05, 11.240, 11.30, and 11.39 Mev, respectively. Single-level dispersion theory analysis indicates assignments , respectively, for these states. Analysis of previously published data at lower energies confirms the assignments , , , , and for the states at 8.05, 8.61, 8.75, 8.90, and 8.98 Mev. A resonance at 4.265 Mev corresponding to the known narrow state at 11.504 Mev was not found in the elastic scattering data although it was found to be strong in .
- Received 19 December 1960
DOI:https://doi.org/10.1103/PhysRev.122.884
©1961 American Physical Society