ELECTRONIC AND GEOMETRIC STRUCTURE IN SILVER CLUSTERS

One-photon ionization mass spectra were recorded for silver clusters (generated by pulsed laser vaporization) throughout the 4.92 to 5.96 eV energy range. Results include: (i) the observation of electronic structure effects to Ag(x), x less-than-or-equal-to 440 and (ii) the determination of vertical ionization potentials for most x less-than-or-equal-to 100 and x = 138. Data are discussed in terms of various model calculations incorporating particle-size-dependent electronic/geometric structure and compared to analogous measurements of cold sodium and copper clusters.