EXPERIMENTAL INVESTIGATIONS OF C-12(H,P)N-14 REACTION MECHANISM

Systematic studies on proton angular distribution and proton-γ-radiation angular correlations have been carried out on the C12(h,p)N14 reaction throughout the energy range 4.62≤Eh≤11.0 MeV. (hHe3.) Both direct and compound-system reaction amplitudes are present; however, the latter appear to dominate. Striking resonant phenomena are observed, and it is suggested that these correspond to quasigiant resonances in the excitation-energy range from 17 to 23 MeV in O15 having a particularly simple structure involving singleproton orbitals coupled to excited N14 core configurations. A systematic correlation has been observed between the population of |m|=1 magnetic substates of the 7.03-MeV state in the residual nucleus and the appearance of backward peaking in the corresponding proton angular distributions. A crude argument relating these phenomena to the participation of a heavy-particle direct stripping mechanism is suggested. © 1969 The American Physical Society.