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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 influence of collisional transfers and perturbations on measured A and B state lifetimes in CN.

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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The lifetimes of 108 different rotational levels of the OH A state (υ = 0-2) have been measured at high spectral resolution using the High Frequency Deflection technique. From these lifetimes the variation of the electronic transition moment is deduced as well as the predissociation rates for levels above the dissociation limit and the formation rate of OH through inverse predissociation.