  We have measured the K-shell and total internal conversion coefficients,
alpha_K and alpha_T, for the 150.8-keV E3 transition in 111Cd to be 1.449(18)
and 2.217(26) respectively. The alpha_K result agrees well with Dirac-Fock
calculations in which the effect of the K-shell atomic vacancy is accounted
for; it extends our precision tests of alpha_K calculations to Z = 48, the
lowest Z yet measured. However, the result for alpha_T disagrees by about two
standard deviations from the calculated alpha_T value, whether or not the
atomic vacancy is included.
