  We identified interatomic Coulombic decay (ICD) channels in argon dimers
after spectator-type resonant Auger decay $2p^{-1}~3d \to 3p^{-2}3d, 4d$ in one
of the atoms, using momentum resolved electron-ion-ion coincidence. The results
illustrate that the resonant core excitation is a very efficient way of
producing slow electrons at a specific site, which may cause localized
radiation damage. We find also that ICD rate for $3p^{-2}4d$ is significantly
lower than that for $3p^{-2}3d$.
