The electron affinity of tungsten

Autor(en)

Anton Lindahl, Pontus Andersson, C. Diehl, Oliver Forstner, Peter Klason, Dag Hanstorp

Abstrakt

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 5 d56 s26S5/2 ground state are photodetached producing neutral W atoms in the 5 d46 s25D0 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-.

Organisation(en)

Isotopenphysik

Externe Organisation(en)

University of Gothenburg, Johannes Gutenberg-Universität Mainz

Journal

European Physical Journal D

Band

60

Seiten

219-222

Anzahl der Seiten

4

ISSN

1434-6060

DOI

https://doi.org/10.1140/epjd/e2010-00199-y

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103005 Atomphysik

Link zum Portal

https://ucris.univie.ac.at/portal/de/publications/the-electron-affinity-of-tungsten(9909ce42-1225-4854-b824-29b918ec36ec).html