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Title: Optical absorption spectra of palladium doped gold cluster cations

Photoabsorption spectra of gas phase Au{sub n}{sup +} and Au{sub n−1}Pd{sup +} (13 ≤ n ≤ 20) clusters were measured using mass spectrometric recording of wavelength dependent Xe messenger atom photodetachment in the 1.9–3.4 eV photon energy range. Pure cationic gold clusters consisting of 15, 17, and 20 atoms have a higher integrated optical absorption cross section than the neighboring sizes. It is shown that the total optical absorption cross section increases with size and that palladium doping strongly reduces this cross section for all investigated sizes and in particular for n = 14–17 and 20. The largest reduction of optical absorption upon Pd doping is observed for n = 15.
Authors:
; ;  [1]
  1. Laboratory of Solid State Physics and Magnetism, KU Leuven, Celestijnenlaan 200d – Box 2414, B-3001 Leuven (Belgium)
Publication Date:
OSTI Identifier:
22416017
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 142; Journal Issue: 3; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 74 ATOMIC AND MOLECULAR PHYSICS; ABSORPTION SPECTRA; ATOMIC CLUSTERS; ATOMS; CATIONS; CROSS SECTIONS; DOPED MATERIALS; EV RANGE; GOLD; MASS SPECTROSCOPY; NITROGEN 14; NITROGEN 15; NITROGEN IONS; PALLADIUM; PHOTONS