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MO: Fachverband Molekülphysik
MO 17: Elektronische Spektroskopie
MO 17.6: Poster
Tuesday, March 11, 2008, 14:00–19:00, Poster C1
Manifestation of lifetime vibrational interference in the decay of resonantly excited N*O π* (v) and NO* π* (v) states into the NO+ A state — •A. Ehresmann1, W. Kielich1, L. Werner1, P.V. Demekhin2, D.V. Omelyanenko2, V.L. Sukhorukov2, K.-H. Schartner3, and H. Schmoranzer4 — 1Institute of Physics and CINSaT, University of Kassel, 34132 Kassel, Germany — 2Rostov State University of Transport Communications, 344038 Rostov-on-Don, Russia — 3I. Institute of Physics, Justus-Liebig University Giessen, 35392 Giessen, Germany — 4Department of Physics, Kaiserslautern University of Technology, 67653 Kaiserslautern, Germany
Dispersed fluorescence from the A-X(v') bands in the NO+ ion produced after de-excitation of the π*(v) resonances of N*O and NO* has been measured in the spectral range of 118nm - 142 nm. This fluorescence results from the participator Auger decay of the π* resonances into the NO+ A state. Ab-initio calculations of the transition probabilities between vibrational levels of the resonant state were used to explain the observed intensity dependences for the A(v')-X(v'') fluorescence bands on the exciting-photon energy across the inner-shell resonances and on both v' and v'' vibrational quantum numbers. The multiplet structure of the π* resonance and lifetime vibrational interference explain the observed exciting-photon energy dependence of the observed A-X fluorescence bands.