Differential cross-section and analyzing-power angular distributions have been measured for the elastic scattering of 159.4 MeV protons on N14 and for the inelastic transitions to the 2.31-MeV and 3.95-MeV states. Elastic-scattering data for p+C12 and inelastic data for the C12(p, p2)C12(4.44 MeV) reaction have also been obtained at the same energy as a normalization check. The N14(pp2)N14(2.31 MeV) transition has been analyzed in the distorted-wave impulse approximation. This transition has long been regarded as a favorable test for the tensor component of the effective nucleon-nucleon interaction. Calculations employing wave functions that provide the necessary cancellation of the L=0 central-interaction transition strength do not provide a good description of the differential cross-section angular distribution. It is suggested that more complicated reaction mechanisms, e.g., (p,d)(d,p) contributions, may be needed to describe this transition. NUCLEAR REACTIONS C12(p, p), (p, p2), Ex=4.44 MeV; N14(p, p), (p, p2), Ex=2.31, 3.95 MeV; Ep=159.4 MeV. Measured (), Ay(), lab=7.5°-45°. DWIA analysis of 2.31-MeV transition.
ASJC Scopus subject areas
- Nuclear and High Energy Physics