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Formation of Light‐Emitting Ag 2 and Ag 3 Species in the Course of Condensation of Ag Atoms with Ar
Author(s) -
Schulze Wilfried,
Rabin Irene,
Ertl Gerhard
Publication year - 2004
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200300939
Subject(s) - fluorescence , excited state , substrate (aquarium) , chemistry , condensation , analytical chemistry (journal) , deposition (geology) , yield (engineering) , photochemistry , spectral line , materials science , atomic physics , optics , chromatography , paleontology , oceanography , physics , astronomy , sediment , biology , metallurgy , thermodynamics , geology
Fluorescent clusters : The agglomeration of Ag clusters resulting from the codeposition of Ag and Ar atoms onto a cold substrate is accompanied by light emission from deexcitation of intermediately formed electronically excited Ag 2 * and Ag 3 * species. The yield of chemiluminescence was investigated as a function of the deposition rates of Ag and Ar. The relative concentrations of Ag, Ag 2 , Ag 3 , and Ag 8 species were monitored by means of their fluorescence spectra, and it is concluded that the light‐emitting species are created by aggregation of Ag n clusters with n >8.