Abstract
The Rice Institute 5.5-Mev Van de Graaff accelerator and a magnetic spectrograph have been used to study reaction products produced by bombardment of , , , , and . values of 9.5, 9.3, 6.31, 5.68, 5.63, 5.49, 4.31, 3.67, and 3.29 Mev were observed for the reaction, corresponding to excitations of from 3.7 to 9.90 Mev in . The energy levels at 7.69 and 8.87 Mev in , for which the values were 5.49 and 4.31 Mev, were determined to have widths of approximately 75 and 175 kev, respectively. For the reaction the observed values were 5.38, 4.33, 3.50, 3.36, 3.09, 2.35, 2.09, 1.61 and 1.50 Mev. The reaction revealed the existence of twelve states below 3.9 Mev of excitation in . These states occur at 0.943, 1.047, 1.089, 1.128, 1.708, 2.102, 2.521, 3.058, 3.130, 3.355, 3.724, and 3.843 Mev of excitation. The ground-state values of the and reactions were determined to be 4.91 and 1.80 Mev, respectively, and the first excited state of was observed at 5.17 Mev by means of the reaction.
- Received 9 April 1959
DOI:https://doi.org/10.1103/PhysRev.116.962
©1959 American Physical Society