Photoionization of metal atom-ammonia clusters formed in a supersonic beam

T. M. Di Palma; A. Latini; Mauro Satta; A. Paladini; Anna Giardini-Guidoni

doi:10.1117/12.378172

25 February 2000 Photoionization of metal atom-ammonia clusters formed in a supersonic beam

T. M. Di Palma, A. Latini, Mauro Satta, A. Paladini, Anna Giardini-Guidoni

Proceedings Volume 4070, ALT '99 International Conference on Advanced Laser Technologies; (2000) https://doi.org/10.1117/12.378172
Event: ALT'99 International Conference: Advanced Laser Technologies, 1999, Potenza-Lecce, Italy

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.

Citation Download Citation

T. M. Di Palma, A. Latini, Mauro Satta, A. Paladini, and Anna Giardini-Guidoni "Photoionization of metal atom-ammonia clusters formed in a supersonic beam", Proc. SPIE 4070, ALT '99 International Conference on Advanced Laser Technologies, (25 February 2000); https://doi.org/10.1117/12.378172

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