Measurement of neutron elastic scattering cross sections for 12C , 40Ca , and 208Pb at energies from 65 to 225 MeV

Differential neutron elastic scattering cross sections for ¹²C , ⁴⁰Ca , and ²⁰⁸Pb have been measured using the continuum neutron source at the Los Alamos Neutron Science Center. The mean incident neutron kinetic energies ranged from 65 to 225 MeV . The large acceptance drift chamber based (n,p) recoil detector telescope spanned a center-of-mass angular range of 7° to 23°. The measured cross sections are compared with calculations obtained with different optical model potentials, including predictions based on microscopic theory and phenomenology.