Journal article
Vibrational analysis of the N₂⁺(C → X) fluorescence in the vicinity of the 1s → π* excitation

Publication Details
Demekhin, P.; Sukhorukov, V.; Kielich, W.; Werner, L.; Klumpp, S.; Ehresmann, A.; Schartner, K.; Schmoranzer, H.
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Journal of Physics B: Atomic, Molecular and Optical Physics
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Fluorescence resulting from the 1s → π* excitation of the N2 molecule has been investigated experimentally and theoretically in the spectral range 165-203 nm. The experiment was performed by photon-induced fluorescence spectroscopy (PIFS) utilizing monochromatized synchrotron radiation from BESSY II with a bandwidth of 70 meV at 400 eV and a fluorescence resolution of 0.1 nm. The high fluorescence resolution enabled us to resolve individual C2Σ+u(v') → X2Σ+g(v'') vibrational bands of the N2+ ion within the Δv = -6 and -7 vibronic band sequences. Unexpected features were observed in the individual fluorescence bands and are explained by calculations accounting for predissociation and molecular rotation.

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Last updated on 2019-01-11 at 16:03