Abstract
The quadrupole-dipole mixing ratio of the 4% gamma-ray branch from the second excited state at 3.95 MeV to the ground state has been determined using the reaction and an beam of 5 MeV. Gamma rays due to the decay of the 3.95-MeV level were detected in coincidence with protons of the right energy to populate the 3.95-MeV level. The protons were detected in a surface-barrier counter at 0° with respect to the beam, and the populations of the magnetic substates were fixed from a simultaneous observation of the transition to the , 2.31-MeV level. Two regions of values for the mixing ratio consistent with the experiment were found, namely, and .
- Received 18 September 1964
DOI:https://doi.org/10.1103/PhysRev.137.B507
©1965 American Physical Society