CXXXI. The angular distribution of long-range alpha particles from the proton bombardment of 15N

The angular distribution of long-range alpha particles from the reaction 15 N(p, α) has been investigated over the range 230 kev-960 kev proton energy. It is found that the levels in 16 O formed by resonant capture of protons of energy 340 kev and 1050 kev have spin and parity (0, +) and (1, -) respectively. Interference effects in the angular distribution caused by these two levels have been observed, but the phase differences necessary to account for these effects are not in full agreement with those predicted from modern dispersion theory.