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MO: Molekülphysik

MO 22: Poster I

MO 22.30: Poster

Samstag, 5. März 2005, 10:30–12:30, Poster HU

High-resolution resonant Auger (RA) spectra of high-n 3d⁻¹nlλ excitations in HBr — •R. Püttner¹, Y. F. Hu², G. M. Bancroft³, A. Kivimäki⁴, M. Jurvansuu⁴, H. Aksela⁴, and S. Aksela⁴ — ¹Freie Universität Berlin, D-14195 Berlin — ²Canadian Light Source Inc., University of Sasketchewan, Saskatoon, SK, Canada — ³University of Western Ontario, London, On, Canada — ⁴University of Oulu, 90401 Oulu, Finland

High-resolution RA spectra of transitions to the non-dissociative final states 4pπ⁻²nlλ of HBr subsequent to 3d⁻¹mlλ excitations are presented. The spectra subsequent to the 3d⁻¹5s,5p excitations can be described by the splitting of the 4pπ⁻² final state and a coupling of the Rydberg electron, with little vibrational fine structure. However, the spectra due to 3d⁻¹7p,8p excitations exhibit complexe features which can be explained with RA transitions to a number of different final states in combination with a vibrational profile for each transition similar to that of the 3d⁻¹ → 4pπ⁻² normal Auger process. The observed number of final states cannot be explained with the spectator/shake model for RA spectra but requires the consideration of non-monopole transitions.