Journal article
Manifestation of doubly excited atomic states in the photoionization cross-sections of Ar, Kr and Xe in the vicinity of the subvalence ns-shell threshold



Publication Details
Authors:
Schmoranzer, H.; Lauer, S.; Liebel, H.; Ehresmann, A.; Demekhin, P.; Lagutin, B.; Petrov, I.; Sukhorukov, V.
Publication year:
2001
Journal:
Journal of Electron Spectroscopy and Related Phenomena
Pages range:
135-140
Volume number:
114
Start page:
135
End page:
140
ISSN:
0368-2048

Abstract
Energy dependences of the total and partial ns-photoionization cross-sections in the vicinity of the ns-subvalence shell threshold were measured for the rare-gas atoms using photon-induced fluorescence spectroscopy. A resolution of 4.5, 3, and 1 meV was attained for Ar, Kr and Xe, respectively. The experimental cross-sections exhibit many well-resolved resonances of different shapes which are connected with the photoionization through the doubly excited atomic states. Calculated photoionization cross-sections of Ar and Kr show that some resonances are determined by doubly excited states including strongly delocalized n′f-excited electrons.


Research Areas


Last updated on 2019-25-07 at 15:42