Connection between the angular distribution of Auger electrons and spectator autoionization electrons following 4d ionization/excitation in xenon

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Abstract
For xenon, the angular distribution of photoinduced N4,5-O2,3O2,3 Auger electrons and of the spectator autoionization lines following 4d5/2 to 6p3/2 and 4d5/2 to 7p3/2 excitation have been measured and analysed on the basis of a two-step formulation for the photoprocess and the subsequent radiationless transition. A close relationship between the angular distribution of Auger electrons and spectator autoionization electrons is established theoretically and found to be in general agreement with the experimental observation. It yields deeper insight into the radiationless decay mechanisms above and below the 4d photoionization threshold.