The electron affinity of tungsten
Journal article, 2010

The electron affinity of tungsten has been measured using laser photodetachment threshold spectroscopy in a collinear geometry. The electron affinity was determined to 6583.6(6) cm-1 by observing the onset of the process when W- ions in the 6S5/2 ground state are photodetached producing neutral W atoms in the 5D0 ground state. The measured value is in agreement with previous measurements and improves the accuracy by almost two orders of magnitude. Further, a photodetachment signal below the ground state photodetachment threshold was found, which indicates the existence of a bound excited state in W-.


Negative ion

Electron affinity


Anton Lindahl

University of Gothenburg

Pontus Andersson

University of Gothenburg

C. Diehl

O. Forstner

Peter Klason

University of Gothenburg

Dag Hanstorp

University of Gothenburg

European Physical Journal D

1434-6060 (ISSN)

Vol. 60 2 219-222

Subject Categories

Atom and Molecular Physics and Optics



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