Photoionization of highly excited atomic sodium involving core-excited resonances |
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Authors: | B Carré P d'Oliveira M Ferray P Fournier F Gounand D Cubaynes J -M Bizau F J Wuilleumier |
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Institution: | 1. Service de Physique des Atomes et des Surfaces, CEN Saclay, F-91191, Gif-sur-Yvette Cedex, France 2. Laboratoire de Spectroscopie Atomique et Ionique and LURE, Université Paris-Sud, B.350, F-91405, Orsay Cedex, France
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Abstract: | Resonant photoionization in thenl outer-shell of 2p 6 nl excited sodium is studied between 32.50 and 33.50 eV. Resonances are of the type 2p 6 nl → 2p 5 3snl → 2p 6 ελ, i.e. corresponding to the excitation of a 2p core-electron to a 3s orbital. Experimental technique combines laser and synchrotron radiation for exciting sequentially sodium atoms. The main features of the resonances — energies and total oscillator strengths — are measured or estimated. From the results, one concludes that the valence electron is almost decoupled from the core, with respect to the core excitation. |
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