  We report theory for time-resolved spectator resonant Interparticle Coulombic
Decay (ICD) processes. Following excitation by a short extreme ultraviolet
pulse, the spectrum of the resonant ICD electron develops. Strong-field
ionization is imagined to quench the decay at different time delays and to
initiate regular ICD. In this latter process, the ICD electron signal can be
measured without interference effects. The typical lifetimes of ICD processes
allow for the observation of oscillations of the time- and energy-differential
ionization probability. We propose to utilize this oscillation to measure
lifetimes of electronic decay processes.
