Evolution of the Xenon (e,2e) Differential Cross Section from a Coplanar Geometry to the Perpendicular Plane in the Intermediate Energy Regime

New (e,2e) differential cross section measurements from xenon are presented as the scattering geometry changes from coplanar to the perpendicular plane. Measurements were taken at energies of 60 eV, 80 eV, and 100 eV above the ionization potential. These new data are compared to measurements collected for the first four noble gases and to that from xenon at lower energies. A new technique is used to measure the ratio of relative cross-sections between xenon and helium using a xenon-helium mixture. With this data absolute differential cross sections of xenon can be determined once the helium cross sections have been calculated.