Abstract
Alpha particles from the reaction were recorded at observation angles from 5 to 140 deg using a broad-range spectrograph. Bombarding energies were 3.00 and 4.00 MeV. The alpha continuum was measured from the reaction threshold up to a corresponding excitation energy of 15.5 MeV in the reaction. The continuum is analyzed in terms of two possible decay modes involving spontaneous three-alpha disintegration of or stepwise two-body decay through states in . When Coulomb barrier effects are taken into account, qualitative agreement with the data is obtained by assuming the reaction proceeds via the three-body process. The low-energy anomaly seen in the reactions and was not observed.
- Received 8 July 1963
DOI:https://doi.org/10.1103/PhysRev.132.1759
©1963 American Physical Society