To take this effect into account, ö0(R)(ö0(R) ) ö0 + vF/R) is
calculated and the contributions of the free electrons to the
dielectric constants are recalculated according to eqs 5a and 5b
using ö0(R) instead of ö0.If not stated otherwise, all results for
Qext(R, ì) shown in this paper were calculated using optical
functions corrected for the mean free path effect by this procedure,
and typical results for 1(R) and 2(R) are shown in Figure 3.