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33.20.Lg Ultraviolet spectra 33.80.Rv Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states)
Abstract:
We investigated multiple ionizations of N2 and O2 molecules by 51 nm EUV-FEL at the SPring-8 Compact SASE Source Test Accelerator in Japan using ion–ion coincidence spectroscopy. Coulomb break-up of parent ions with charge states up to four (N24+ → N2+–N2+) or five (O25+ → O3+–O2+) is found.