Photoelectron spectroscopy of XenI− clusters (n⩽13)

XenI− clusters (n⩽13) have been studied by anion photoelectron (PE) spectroscopy at a photon energy of 4.661 eV and an electron energy resolution of 10 meV. Electron affinities (EAʹs) as a function of cluster size are extracted and compared to previous PE and tunable laser photodetachment spectra of these species. The EAʹs found in this study lie between those of the two earlier experiments. These discrepancies are attributed to calibration issues in the earlier PE spectra and the influence of charge-transfer-to-solvent states in the tunable laser experiments.