Auger Spectra of K⁺ L₂₃ Excitations in Potassium Halides

Summary, in English

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.

• Author: A. Kikas; A. Ausmees; M. Elango; J. N. Andersen; R. Nyholm; I. Martinson
• Department/s: MAX IV Laboratory; Department of Physics
• Publishing year: 1991-07-15
• Language: English
• Pages: 683-686
• Publication/Series: Europhysics Letters
• Volume: 15
• Issue: 6
• Links: http://dx.doi.org/10.1209/0295-5075/15/6/021
• Document type: Journal article
• Publisher: EDP Sciences
• Status: Published
• ISBN/ISSN/Other: ISSN: 0295-5075