University of Oulu

Jänkälä, K.; Lablanquie, P.; Andric, L.; Khalal, M. A.; Palaudoux, J.; Penent, F.; Bizau, J.-M.; Cubaynes, D.; Guilbaud, S.; Ito, K.; Bučar, K.; Žitnik, M.; Huttula, M.; Kaneyasu, T.; Hikosaka, Y. (2020) Core-hole spectator Auger decay. Physical Review A 101(2): 023413.

Core-hole spectator Auger decay

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Author: Jänkälä, K.1; Lablanquie, P.2; Andric, L.2;
Organizations: 1Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland
2Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, 4 Place Jussieu, 75005 Paris, France
3ISMO, CNRS UMR 8214, Université Paris-Sud, Université Paris-Saclay, 91405 Orsay, France
4Synchrotron SOLEIL, l’Orme des Merisiers, Saint-Aubin, Boîte Postale 48, 91192 Gif-sur-Yvette Cedex, France
53ISMO, CNRS UMR 8214, Université Paris-Sud, Université Paris-Saclay, 91405 Orsay, France
6Jozef Stefan Institute, Jamova Cesta 39, SI-1001 Ljubljana, Slovenia
7SAGA Light Source, Tosu 841-0005, Japan
8Institute of Liberal Arts and Sciences, University of Toyama, 930-0194, Japan
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.4 MB)
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Language: English
Published: American Physical Society, 2020
Publish Date: 2020-06-18


For an atomic state with two electrons missing from different core orbitals one may assume that the deeper hole decays first. However, it is quite probable that the double core-hole state will decay by emission of a slow Auger electron where the deeper core hole remains a spectator, especially if the outer core hole can be filled by Coster-Kronig transition, while the deeper cannot. We study here the competition of both Auger decay channels in a model system, the 1s2s2p⁶(3s/3p) states of Ne⁺ ions. As the phenomenon can take place in any decay chain involving multiple core-excited states it can be critical to understand the ion yields, the electron and x-ray emission spectra, and the molecular fragmentation.

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Series: Physical review. A
ISSN: 2469-9926
ISSN-E: 2469-9934
ISSN-L: 2469-9926
Volume: 101
Issue: 2
Article number: 023413
DOI: 10.1103/PhysRevA.101.023413
Type of Publication: A1 Journal article – refereed
Field of Science: 114 Physical sciences
Funding: This work has been financially supported by the Research Council for Natural Sciences and Engineering of the Academy of Finland. M.A.K., K.I., and T.K. acknowledge the support of the Labex Plas@Par managed by the Agence Nationale de la Recherche, as part of the “Programme d’Investissements d’Avenir” under Reference No. ANR-11-IDEX-0004-02.
Copyright information: © 2020 American Physical Society.