Classical scattering in strongly attractive potentials
  Scattering in central attractive potentials is investigated systematically,
in the limit of strong interaction, when large-angles scattering dominates. In
particular, three important model interactions (Lennard-Jones, Yukawa, and
exponential), which are qualitatively different from each other, are studied in
detail. It is shown that for each of these interactions the dependence of the
scattering angle on the properly normalized impact parameter exhibits a
quasi-universal behavior. This implies simple scaling of the transport cross
sections with energy in the considered limit. Accurate fits for the momentum
transfer cross section are suggested. Applications of the obtained results are
discussed.
