(e,2e) measurements using a magnetic angle changer

We discuss recently published data for TDCS of the inner valence shell 3s ionization of argon measured over the backward scattering direction. We also present new data for outer shell 3p ionization of argon over the full angular range in the scattering plane, including the region where scattered/ejected electrons emerge at the same angle. To our knowledge, this is the first reported TDCS over the complete 360° angular range using a conventional (e,2e) spectrometer.