The electron affinity of tungsten
Artikel i vetenskaplig tidskrift, 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

Göteborgs universitet

Pontus Andersson

Göteborgs universitet

C. Diehl

O. Forstner

Peter Klason

Göteborgs universitet

Dag Hanstorp

Göteborgs universitet

European Physical Journal D

14346060 (ISSN) 14346079 (eISSN)

Vol. 60 2 219-222


Atom- och molekylfysik och optik



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