  We use a simplified self-consistent method to address nonlinear-optical
cascading phenomena, which shows added microscopic cascading contributions in
high-ordered nonlinear susceptibilities through fifth order. These cascading
terms in the microscopic regime encompass all possible scalar cascading
configurations. The imposition of geometric constraints further influences the
predicted cascading contributions and opens up additional design parameters for
nonlinear-optical materials. These results are used in approximating the
effective fifth-order susceptibility in thin films of C60 monomers of varying
thickness and concentration. This paper contains the corrections to the
original paper that appeared in the Journal of Physics B as reflected in the
content of the corrigendum that followed.
