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Optical excitation in small ionized sodium clusters: closed-shell and open-shell systems

✍ Scribed by C. Bréchignac; Ph. Cahuzac; F. Carlier; M. de Frutos; J. Leygnier

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
523 KB
Volume
189
Category
Article
ISSN
0009-2614

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✦ Synopsis

Photoabsorption cross-section profiles have been obtained for closed-shell and open-shell ionized size-selected sodium clusters

Na,+ , Na:, and Na:, The spill-out of the valence electron cloud explains the red-shifted collective excitation frequency with regard to the Mie frequency. Quantum-mechanical calculations may give energy positions of the resonant structures consistent with the experiment. However, the absolute parameters of the profiles suggest that some oscillator strength is missing.

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