High-resolution (e,2e) energy spectra are presented which enable the i
solation of interference effects between J = 0, 1, 2 multipoles in ele
ctron-impact ionization of cadmium. It is found that both resonant and
nonresonant processes are important. Relative magnitudes and phases o
f ionization amplitudes are obtained which disagree with plane-wave Bo
rn approximation calculations.