Photodissociation of mass-selected clusters: solvated metal ions

James M. Farrar; Stephen G. Donnelly

doi:10.1117/12.58128

1 April 1992 Photodissociation of mass-selected clusters: solvated metal ions

James M. Farrar, Stephen G. Donnelly

Proceedings Volume 1638, Optical Methods for Time- and State-Resolved Chemistry; (1992) https://doi.org/10.1117/12.58128
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

We present a study of the photodissociation spectra of Sr⁺ solvated by the polar molecules H₂0 and NH₃. Mass selection allows us to control the number of solvent molecules bound to the metal center. The electronic spectra are interpreted using ligand field and charge transfer concepts. For clusters with NH₃ as the solvent, the spectra undergo large red shifts with increasing cluster size, with absorption maxima moving from 590 nm for n=1 to 1.4μ for n=6. Absolute cross section measurements show that <r²> for the valence electron increases by a factor of nearly 20 as n increases from 1 to 5. This increase is confirmed in molecular dynamics simulations by Martyna and Klein, suggesting that the initial stages of ionization and solvation involve Rydberg state formation.

Citation Download Citation

James M. Farrar and Stephen G. Donnelly "Photodissociation of mass-selected clusters: solvated metal ions", Proc. SPIE 1638, Optical Methods for Time- and State-Resolved Chemistry, (1 April 1992); https://doi.org/10.1117/12.58128

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