The reaction has been studied in order to investigate the properties of excited states. A missing state of which could have a great influence on the reaction rate, was searched for, but the existence of this state was not clearly verified. The spins and parities of the 5.11- and 5.15-MeV states were assigned tentatively by angular distribution measurements, as and respectively. We were able to resolve the doublets at 4.5, 5.1, and 6.3 MeV clearly for the first time due to our high precision system, which allowed us to determine the widths of some critical states above the proton threshold of more precisely.
- Received 8 June 1998
©1999 American Physical Society