We have measured the zero degree cross sections for the ${}_{}{}^{14}{}_{}{}^{}(\mathit{p}$,n) reaction leading to the (2.31+3.95) MeV states in ${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$ at energies of 200, 300, and 450 MeV. Cross sections for the Fermi transition to the 2.31 MeV state and for the Gamow-Teller transition to the 3.95 MeV state have been extracted using earlier measurements of the cross-section ratios. The results are compared with calculations using G-matrix effective interactions based on the Paris potential, and on one of the Bonn potentials, and a t-matrix effective interaction derived from nucleon-nucleon phase shifts. The best fit to both the present results and earlier results at lower energies is provided by calculations based on the Bonn potential.

• Received 5 October 1988

DOI:https://doi.org/10.1103/PhysRevC.39.1189