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High resolution RAES spectra of recorded along resonance: Left at , Top at , Right at , together with the Off (off resonance spectrum, shifted by to account for , see text). The spectra are normalized with respect to gas pressure and photon flux and their different intensities reflect the photon energy dependence of the photoexcitation cross section.
Mass selected photoelectron spectra (MSPES) recorded after resonant excitation in . For every spectrum the coincident fragment ion is indicated at the right side. The vertical dashed line was drawn for eye guidance at the nominal energy of the atomic state.
Auger electron energy distributions associated with the ion formation and emitted in a direction parallel (blue: Triangles), antiparallel (red: Diamonds), or perpendicular (black: Continuous) to the ion emission. An Auger–Doppler splitting of about between the red (diamonds) and blue (triangles) components is observed.
MSPES obtained for and , with the electron emitted parallel (blue: Triangles) or antiparallel (red: Diamonds) to the ejected fragment. The bottom spectrum is the resonant Auger emission from the HCl molecule at resonance.
Maximum KER for the main fragments expressed in eV. The accuracy in the KER determination is .
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