STATIC POLARIZABILITIES OF CHARGED SILVER METAL CLUSTERS EXTRACTED FROM THE OPTICAL SPECTRA

The use of sum rules appears to be a powerful tool for obtaining experimental data on static properties of charged metal clusters which are currently not available. For this purpose the optical spectra of the clusters must be known. The measured absorption profiles of sputtered, i.e. hot, [Formula: see text] and [Formula: see text] which have been measured in our group give information about the desired properties. The extracted static polarizabilities show a distinct shell structure which reflects the overall electronic shape of the cluster. A comparison is made with Ag N and positive alkali metal clusters. The polarizabilities of closed-shell [Formula: see text] and [Formula: see text] are in reasonable agreement with SIC-LDA corrected RPA polarizabilities.