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Relative extent of triple Auger decay in CO and CO2

Journal article
Authors Andreas Hult Roos
John H. D. Eland
Jonas Andersson
Måns Wallner
Richard J. Squibb
Raimund Feifel
Published in Physical Chemistry Chemical Physics - PCCP
Volume 21
Pages 9889-94
ISSN 1463-9076
Publication year 2019
Published at Department of Physics (GU)
Pages 9889-94
Language en
Subject categories Physical Sciences, Atom and Molecular Physics and Optics, Atomic physics, Molecular physics


Systematic measurements on single and triple Auger decay in CO and CO2 after the creation of a C 1s or a O 1s core vacancy show that the percentage of triple Auger decay is on the order of 10−2 of the single Auger decay in these molecules. The fractions of triple Auger decay are compared with triple Auger fractions for carbon atoms and some noble gas atoms, and are found to follow a linear trend correlated to the number of valence electrons on the atom with the initial core vacancy and on its closest neighbours. This linear trend for the percentage of triple Auger decay is represented by a predictive equation TA = 0.13·Nve − 0.5.

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