Angular distributions have been measured for the ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$($p$,$n$)${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$(0.0 and 3.95 MeV) reactions at $E_p=35\mathrm{}$ MeV. The differential cross sections for the two $1^{+}$ states (0.0 and 3.95 MeV) have been compared with antisymmetrized distorted-wave Born-approximation calculations based on phenomenological and realistic effective two-nucleon interactions. In contrast to recent analyses of spin-sensitive measurements, the ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$($p$,$n$)${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$(g.s.) data definitely favor the inclusion of an isovector ténsor interaction.

NUCLEAR REACTIONS ${}_{}{}^{14}{}_{}{}^{}\mathrm{C}$($p$,$n$)${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$, $E=35\mathrm{}$ MeV; measured $\sigma \left(\theta \right)$. DWBA analysis, deduced tensor force.

• Received 13 November 1978

DOI:https://doi.org/10.1103/PhysRevC.20.1627