Multi-coincidence study on resonant-Auger induced ICD

摘要

Though inner-valence vacancy states in molecules are usually not subject to autoionization, such states may be subject to autoionization if the molecules are close to each other. This new type of autoionization was noted by Cederbaum et al. [1] and called intermolecular or interatomic Coulombic decay (ICD). We have investigated and identified interatomic Coulombic decay following resonant Auger decay, using Ar_2, ArKr and ArXe as a sample and focusing on spectator Auger decay following 2p_(3/2) → 4s and 2p_(3/2) → 3d excitations in Ar using momentum-resolved electron-ion-ion coincidence [2,3].