Post-collision interaction in 4d ionization of xenon

Abstract
The threshold photoelectron spectrum of Xe in the region of the 4d edge is analysed with the aid of detailed photoion charge ratios. The experimental technique is that of detecting energy losses of 8 keV electrons at zero angle, in coincidence with either ejected threshold (0< epsilon 1+ state is seen as a significant loss of intensity of zero-volt electrons at the actual threshold.