Experimental investigation of core-valence double photoionization.

Core-valence double photoionization has been observed in Ne atoms and N2 molecules using a magnetic-bottle time of flight spectrometer. The multielectron coincidence data sets give complete information on the energy correlations between all emitted electrons, which supports a detailed description of the core-valence double photoionization processes including direct spectroscopy of the core-valence doubly ionized states, the final states populated by their Auger decay and details of the dynamics of core-valence double photoionization for selected states.