$p-{}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ elastic and $p-{}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ bremsstrahlung cross sections are calculated using various resonance parameters. We have found that among all the resonance parameters studied by us the Maryland parameters for $p-{}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ is the only set which fits the elastic scattering data. We have also found that those resonance parameters which give good agreement with the bremsstrahlung data at 1795 keV tend to give poor agreement with the elastic data near the 1.7-MeV resonances. Our bremsstrahlung calculations are based on the Feshbach-Yennie approximation.

NUCLEAR REACTIONS ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}\mathrm{}(p,p)\mathrm{}{}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ and ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}(p,p\gamma ){}_{}{}^{12}{}_{}{}^{}\mathrm{C}$, $E_p=1.765\mathrm{}-1.895$ MeV; calculate $\frac{d\sigma }{d{\Omega }_p}$ and $\frac{d^3\sigma }{d{\Omega }_{p}d{\Omega }_{\gamma }\mathrm{dk}}$; deduced resonance parameters.

• Received 11 July 1980

DOI:https://doi.org/10.1103/PhysRevC.23.2357