Coupled-Channel Calculation ofC12-Neutron Scattering

Coupled-channel calculations are described for the interaction between a neutron and ${\mathrm{C}}^{12}$. Emphasis is placed on the incident-energy region between 0 and 5 MeV, although the bound states are also calculated. Precise fits to total, elastic differential, and polarization cross sections are obtained. Comparisons with other treatments of the $A=13\mathrm{}$ system are made, and the differences are discussed, in particular the meaning of the weak-coupling approximation. Deficiencies in the present method of calculation are also discussed.