4.6 Article

Core-hole spectator Auger decay

Journal

PHYSICAL REVIEW A
Volume 101, Issue 2, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.101.023413

Keywords

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Funding

  1. Research Council for Natural Sciences and Engineering of the Academy of Finland
  2. Labex Plas@Par by the Agence Nationale de la Recherche [ANR-11-IDEX-0004-02]
  3. SOLEIL Peer Review Committee [20170434]

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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 1s2s2p(6) (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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