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Auger Spectra of K+ L23 Excitations in Potassium Halides

Kikas, A. ; Ausmees, A. ; Elango, M. ; Andersen, J. N. LU ; Nyholm, R. LU and Martinson, I. LU (1991) In Europhysics Letters 15(6). p.683-686
Abstract

The L23M23M23 Auger spectra of K+ L23 excitation in potassium halides are measured using photon excitation with different energies in the region of the K+ L23 absorption edge (around 300 eV). It is shown that the screening of the two 3p holes caused by the collapsed 3d electron of the K+ L23 exciton leads to a considerable shift (by about (6÷7) eV) of the K+ L23M23M23 Auger bands to higher energies. Only the low-energy component of the crystal-field-split K+ 3d orbital forms a genuine bound state with 2p holes, whereas its high-energy component lies in the conduction band continuum and... (More)

The L23M23M23 Auger spectra of K+ L23 excitation in potassium halides are measured using photon excitation with different energies in the region of the K+ L23 absorption edge (around 300 eV). It is shown that the screening of the two 3p holes caused by the collapsed 3d electron of the K+ L23 exciton leads to a considerable shift (by about (6÷7) eV) of the K+ L23M23M23 Auger bands to higher energies. Only the low-energy component of the crystal-field-split K+ 3d orbital forms a genuine bound state with 2p holes, whereas its high-energy component lies in the conduction band continuum and behaves like a shape resonance.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
in
Europhysics Letters
volume
15
issue
6
pages
4 pages
publisher
EDP Sciences
external identifiers
  • scopus:84919216727
ISSN
0295-5075
DOI
10.1209/0295-5075/15/6/021
language
English
LU publication?
yes
id
095348ed-8454-469f-aaf7-d53d67416599
date added to LUP
2016-05-17 14:35:44
date last changed
2025-10-14 10:42:54
@article{095348ed-8454-469f-aaf7-d53d67416599,
  abstract     = {{<p>The L<sub>23</sub>M<sub>23</sub>M<sub>23</sub> Auger spectra of K<sup>+</sup> L<sub>23</sub> excitation in potassium halides are measured using photon excitation with different energies in the region of the K<sup>+</sup> L<sub>23</sub> absorption edge (around 300 eV). It is shown that the screening of the two 3p holes caused by the collapsed 3d electron of the K<sup>+</sup> L<sub>23</sub> exciton leads to a considerable shift (by about (6÷7) eV) of the K<sup>+</sup> L<sub>23</sub>M<sub>23</sub>M<sub>23</sub> Auger bands to higher energies. Only the low-energy component of the crystal-field-split K<sup>+</sup> 3d orbital forms a genuine bound state with 2p holes, whereas its high-energy component lies in the conduction band continuum and behaves like a shape resonance.</p>}},
  author       = {{Kikas, A. and Ausmees, A. and Elango, M. and Andersen, J. N. and Nyholm, R. and Martinson, I.}},
  issn         = {{0295-5075}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{6}},
  pages        = {{683--686}},
  publisher    = {{EDP Sciences}},
  series       = {{Europhysics Letters}},
  title        = {{Auger Spectra of K<sup>+</sup> L<sub>23</sub> Excitations in Potassium Halides}},
  url          = {{http://dx.doi.org/10.1209/0295-5075/15/6/021}},
  doi          = {{10.1209/0295-5075/15/6/021}},
  volume       = {{15}},
  year         = {{1991}},
}