Fig. 2: Coincidental 3d5/2 photoelectron, Auger and ICD electron spectra.

a High-energy Auger and core-level ICD electrons detected in coincidence with 3d5/2 photoelectrons from bulk (blue dashed) and surface (green solid) of Kr clusters each normalized to equal area of the M5N2,3N2,3 Auger spectrum between 52.1 and 59.2 eV kinetic energy. b Spectrum of the Kr 3d5/2 photoelectron measured in coincidence with Auger or core-level ICD electrons for atoms and clusters in a partially condensed cluster jet. The cluster signal is additionally split into surface and bulk signals. The blue and green shaded areas indicate the electron kinetic energy ranges used to identify the coincident events shown in a.