Abstract
Relative partial photoionisation cross sections and the photoelectron angular distribution parameter beta have been measured for the 4d electrons of atomic silver in the energy range 14<or=h nu <or=140 eV. Data are found to be in good agreement with the results calculated in the relativistic random-phase approximation (RRPA) for the neighbouring atom palladium. Comparison with solid-state data reveals a dominant atomic character of the 4d electrons in metals. This is especially evident for the beta parameter. However, differences occurring around the Cooper minimum at 130 eV show the influence of the metallic state on the properties of the 4d electrons.
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