Simple function form for n+208Pb total cross section between 5 and 600   MeV
  The total cross section for neutron scattering from 208Pb with energies between 5 and 600 MeV has been analyzed extending a previously defined simple function of three parameters to reveal a Ramsauer-like effect throughout the whole energy range. This effect can be parametrized in a simple way so that it may be anticipated that the complete function prescription will apply for total cross sections from other nuclei. 
P. K. Deb, K. Amos and S. Karataglidis