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Articles you may be interested inDissociative double photoionization of singly deuterated benzene molecules in the 26-33 eV energy range Single and double ionization of nitric oxide by electron impact from threshold up to 180 eV Photoionization and photodissociation of NO has been studied using 9-35 eV synchrotron light and detection of fluorescence as well as of mass selected NO ϩ , N ϩ , O ϩ , and O Ϫ ions. Rydberg series converging to all known states in NO ϩ below 24 eV have been analyzed and classified and several of them are found to be predissociated by various NO ϩ states as well as by NO ion pair states. The complex structure in the 950-1200 Å excitation region is suggested to originate from interaction between a ''new'' NO valence state at T 0 ϭ77 470 cm Ϫ1 and high vibrational levels of Rydberg series converging to the NO ϩ ground state.

The N2 1sB 2 Xd dispersed fluorescence from photon excited N2 molecules has been measured in the 19–34 eV excitation range, where our theory predicts the existence of non-Rydberg doubly excited resonances which autoionize in the sub-fs regime into the N2 1 B2S1u ionic state. The experimentally deduced vibrational branching ratios sy0 ­ 1dysy0 ­ 0d revealed five prominent features, four of which could be identified as such doubly excited resonances based on the lowest order of the many-body perturbation theory. [S0031-9007(96)00230-X]

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Photon induced fluorescence from O2 has been studied in various emission regions 1150-6500 Å in the excitation range 14-28eV using the Swedish synchrotron facility MAX in Lund. A rich line structure is observed which is interpreted in terms of autoionization and dissociation of Rydberg levels converging to the a, b, c, and B states in O2+. New features have been observed, for instance, concerning the (c 4Σu−) 3sσg Fano resonance which has been viewed in detail in different detection channels including O2+ and O+ ions.

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