Abstract
The Studsvik high-resolution, low-background time-of-flight facility has been used to obtain a comprehensive set of differential neutron-scattering cross sections for carbon at the neutron energies 16.5, 17.6, 18.7, 19.8, 20.9, 21.6 and 22.0 MeV. Angular distributions in the range 10–160° have been measured for elastic scattering, and also for inelastic scattering from the levels at 4.44, 7.65 and 9.64 MeV. Angle-integrated cross sections have been determined by fitting Legendre polynomial expansions to the differential data. The results have been treated in terms of a phenomenological spherical optical model. Potential depths and geometrical parameters were determined from fits to the elastic-scattering data, while deformation parameters were obtained from inelastic scattering using the distorted-wave Born approximation. Elastic and inelastic angular distributions were also calculated with the coupled-channels formal-
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