Coster-kronig decay of the ar2s hole observed by auger-threshold photoelectron coincidence spectroscopy
The Coster-Kronig lines associated with Ar2s decay have been resolved within the natural linewidth of the 2s hole for the first time. This was possible by a new spectroscopic technique, relying on resonance enhanced double photoionization, Auger-threshold photoelectron coincidence spectroscopy. Contrary to standard Auger spectroscopy, this technique can filter out weak components in Auger spectra corresponding to a well-defined inner-shell state and, furthermore, can achieve a resolution no longer limited by the lifetime of the inner-shell hole.
Lablanquie
P
L.U.R.E. Centre Universitaire Paris-Sud, Batiment 209D, BP 34, 91898 Orsay Cedex, France.
Penent
F
Hall
RI
Kjeldsen
H
Eland
JH
Muehleisen
A
Pelicon
P
Smit
&Zbreve;
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Koike
F