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Proceedings Paper

Photoionization of metal atom-ammonia clusters formed in a supersonic beam
Author(s): T. M. Di Palma; A. Latini; Mauro Satta; A. Paladini; Anna Giardini-Guidoni
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Paper Abstract

The results of spectroscopies studies of Me*NH3)n clusters formed in a supersonic beam from the laser ablated metal with gaseous ammonia are here reported. The ionization potentials of Cu(NH3)n 2 <EQ n <EQ 6 have been measured. The observed IPs are shifted to lower energies with respect to the bare Cu atom IP. They appear to decrease monotonically with increasing clusters size. The observed trend is consistent with a model in which the unpaired valence electron of the ground electronic state is delocalized in a well bound surface states. The data are confirmed by energetics and structure calculations performed by density functional method.

Paper Details

Date Published: 25 February 2000
PDF: 6 pages
Proc. SPIE 4070, ALT '99 International Conference on Advanced Laser Technologies, (25 February 2000); doi: 10.1117/12.378172
Show Author Affiliations
T. M. Di Palma, Istituto Materiali Speciali (Italy)
A. Latini, Univ. degli Studi di Roma La Sapienza (Italy)
Mauro Satta, Univ. degli Studi di Roma La Sapienza (Italy)
A. Paladini, Univ. degli Studi di Roma La Sapienza (Italy)
Anna Giardini-Guidoni, Univ. degli Studi di Roma La Sapienza and Istituto per i Materiali Speciali (Italy)


Published in SPIE Proceedings Vol. 4070:
ALT '99 International Conference on Advanced Laser Technologies
Vladimir I. Pustovoy; Vitali I. Konov, Editor(s)

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