The horizontal lines indicate the potential energy curves of the excited valence-ionized states produced through the resonant Auger decay of the parent state following Ar() core excitation at 246.93 eV. The steep curves indicate the potential energy of the two-site doubly ionized final states obtained after ICD. The relative populations of the final resonant Auger states are given in per cent. Only states acquiring more than 5% of the total population are depicted. The equilibrium distance of the neutral ArKr (Req = 3.88 Å) is shown as a vertical dotted line.