Single, double, and triple Auger decay of the Xe 4p core-hole states

Auger decay of Xe+ states arising from 4p ionization has been studied with a very efficient multielectron coincidence method. Coster-Kronig decay from Xe+ 4p(-1) and the subsequent decay into Xe3+ states with three valence holes are identified. Formation of Xe4+ is also observed as quadruple coincidences between a 4p photoelectron and three Auger electrons. The relative probabilities of individual multi-ionization processes are determined from the coincidence yields.