Controlling Low-Energy Electron Emission via Resonant-Auger-Induced Interatomic Coulombic Decay

We have investigated interatomic Coulombic decay (ICD) after resonant Auger decay in Ar-2, ArKr, and ArXe following 2p(3/2) -> 4s and 2p(3/2) -> 3d excitations in Ar, using momentum-resolved electron-ion-ion coincidence. The results illustrate that ICD induced by the resonant Auger decay is a well-controlled way of producing energy-selected slow electrons at a specific site.