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Postcollision-interaction effects in multistep Auger transitions following Ar 1s photoionization
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- Kosugi, S. (author)
- Sophia Univ, Dept Mat & Life Sci, Tokyo 1028554, Japan.;Tokyo Gakugei Univ, Dept Phys, Tokyo 1848501, Japan.
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- Guillemin, R. (author)
- Sorbonne Univ, CNRS, UMR 7614, Lab Chim Phys Matiere & Rayonnement, F-75005 Paris, France.
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- Travnikova, O. (author)
- Sorbonne Univ, CNRS, UMR 7614, Lab Chim Phys Matiere & Rayonnement, F-75005 Paris, France.;Synchrotron SOLEIL, BP 48, F-91192 Gif Sur Yvette, France.
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- Sophia Univ, Dept Mat & Life Sci, Tokyo 1028554, Japan;Tokyo Gakugei Univ, Dept Phys, Tokyo 1848501, Japan. Sorbonne Univ, CNRS, UMR 7614, Lab Chim Phys Matiere & Rayonnement, F-75005 Paris, France. (creator_code:org_t)
- American Physical Society, 2022
- 2022
- English.
- In: Physical Review A: covering atomic, molecular, and optical physics and quantum information. - : American Physical Society. - 2469-9926 .- 2469-9934. ; 106:3
- Journal article (peer-reviewed)
Abstract
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- Postcollision-interaction (PCI) effects involving multistep decay processes following Ar 1s photoionization has been studied by Auger electron spectroscopy. The experiment focused on LMM Auger electrons measured in small photon energy steps across the Ar 1s photoionization threshold. Decay pathways that we studied include (1) the Ar+*2p-1 -> Ar2+3p-2 LMM alpha Auger process due to a single L hole created by KL fluorescence, (2) the Ar2+*2p-2 -> Ar3+*2p-13p-2 LMM1 Auger process following double L shell hole states produced by a KLL Auger processes, and (3) the subsequent Ar3+*2p-13p-2 -> Ar4+3p-4 LMM2 Auger transitions. Particularly pronounced PCI shifts and unusual line shapes compared to the ordinary one-step PCI process were found in the spectra of Auger processes following a KLL Auger first step. The experimental results were compared with calculations based on the semiclassical approach to PCI. Good agreement was found between the calculated and experimental PCI shifts. The result opens possibilities for further studies of the multielectron dynamics between Auger electrons mediated through the photoelectron in these and similar systems.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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- art (subject category)
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- Kosugi, S.
- Guillemin, R.
- Travnikova, O.
- Marchenko, T.
- Koulentianos, D.
- Martins, J. B.
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- Hosseini, F.
- Puettner, R.
- Ceolin, D.
- Journel, L.
- Piancastelli, Ma ...
- Ismail, I.
- Koike, F.
- Iizawa, M.
- Sheinerman, S.
- Gerchikov, L.
- Azuma, Y.
- Simon, M.
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