Abstract
The valence photoelectron spectra of free, neutral, and size-varied K and Rb alkali metal clusters are studied. The experimental spectra are simulated with jellium model-based calculations with and without inclusion of dipole matrix elements and continuum wavefunctions. The simple jellium model used is found to provide good qualitative correspondence with the experimental results. It is shown that the dipole matrix elements provide a remarkable improvement to the standard density of states approach in understanding the photoelectron spectra of small to medium size metal clusters.
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