University of Oulu

Keskinen, J., Jänkälä, K., Huttula, S.-M., Kaneyasu, T., Hikosaka, Y., Shigemasa, E., Iwayama, H., Soejima, K., Ito, K., Andric, L., Khalal, M. A., Palaudoux, J., Penent, F., & Lablanquie, P. (2021). Auger decay of the 3d hole in the isoelectronic series of Br, Kr+ , and Rb2+. Physical Review A, 103(3).

Auger decay of the 3d hole in the isoelectronic series of Br, Kr⁺, and Rb2⁺

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Author: Keskinen, J.1; Jänkälä, K.1; Aho, S.-M.1;
Organizations: 1Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland
2SAGA Light Source, Tosu 841-0005, Japan
3Institute of Liberal Arts and Sciences, University of Toyama, Toyama 930-0194, Japan
4Institute for Molecular Science, Okazaki 444-8585, Japan
5Department of Environmental Science, Niigata University, Niigata 950-2181, Japan
6Société Civile Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, Boîte Postale 48, 91192 Gif-sur-Yvette Cedex, France
7Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, 4 Place Jussieu, 75005 Paris, France
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.9 MB)
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Language: English
Published: American Physical Society, 2021
Publish Date: 2021-09-02


The Auger decay process of the 3d5/2 hole is studied experimentally and theoretically along the isoelectronic Br, Kr⁺, and Rb2⁺ series with electron configuration [Ar] 3d⁹4s²4p⁶. The experimental results consist of multielectron coincidence data measured from all three elements and conventional high-resolution Auger spectrum for the Br case. Theoretical interpretation was done by using multiconfiguration Dirac-Fock calculations. It is found that the decay rate of two-Auger-electron emission increases along the series in the direction of decreasing nuclear charge. Also, complexity of the Auger spectrum follows the same trend, requiring a drastic increase to the size of the configuration space for describing the observed spectra.

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Series: Physical review. A
ISSN: 2469-9926
ISSN-E: 2469-9934
ISSN-L: 2469-9926
Volume: 103
Issue: 3
Article number: 032828
DOI: 10.1103/PhysRevA.103.032828
Type of Publication: A1 Journal article – refereed
Field of Science: 114 Physical sciences
Funding: We are grateful to R. Püttner for his help during the measurements and to the BESSY and UVSOR staff for the stable operation of the synchrotrons during these measurements. This work has been financially supported in part by the European Community, Research Infrastructure Action, under the FP6 “Structuring European Research Area” Programme (Contract No. R II 3-CT-2004-506008), and by the Research Council for Natural Sciences and Engineering of the Academy of Finland. P.L. acknowledges the support of the Institute of Molecular Science and J.K. acknowledges EXACTUS-DP (Doctoral Program in Exact Sciences), TheMagnus Ehrnrooth Foundation, and the Vilho, Yrjö and Kalle Väisälä Fund.
Copyright information: © 2021 American Physical Society.