Gamma Radiation from the Reaction11B(p, )12C

The angular distributions of the 16.1, 11.7 and 4.4 MeV γ-rays from the reaction 11 B(p, γ) 12 C have been determined at a number of bombarding energies. The angular distribution of the 16 MeV radiation is shown to be consistent with the accepted assignment of J = 2 + to the resonance at E p =163 keV, and shows interference involving a higher level having J =1 - which is identified with the broad resonance at E p =1390 keV. The angular distribution of the 11.7 MeV radiation shows interference between the resonances at 680 and 1390 keV and suggests the assignment J =2 + to the 680 keV resonance.