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X-ray-induced attosecond ion-water electron dynamics of aqueous ions

Gopakumar, Geethanjali (author)
Unger, Isaak (author)
Uppsala universitet,Kemisk och biomolekylär fysik,Center for Free-Electron Laser Science, DESY, Notkestrasse 85, DE-22607 Hamburg, Germany
Öhrwall, G (author)
MAX IV Laboratory, Fotongatan 2, 221 00 Lund, Sweden
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Malerz, S (author)
Molecular Physics Department, Fritz Haber Institute of the Max Planck Society, Faradayweg 4, 14195 Berlin, Germany
Ceolin, D (author)
Trinter, F (author)
Molecular Physics Department, Fritz Haber Institute of the Max Planck Society, Faradayweg 4, 14195 Berlin, Germany
Chatzigeorgiou, Evanthia (author)
Uppsala universitet,Kemisk och biomolekylär fysik
Winter, B (author)
Molecular Physics Department, Fritz Haber Institute of the Max Planck Society, Faradayweg 4, 14195 Berlin, Germany
Caleman, Carl (author)
Center for Free-Electron Laser Science, DESY, Notkestrasse 85, DE-22607 Hamburg, Germany
Björneholm, Olle (author)
Uppsala universitet,Kemisk och biomolekylär fysik
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 (creator_code:org_t)
English.
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  • The foundation of many physical and chemical processes is the transfer of charge from one entity to another. In many cases, the charge transfer is mediated by electron transfer and due to the comparatively low mass of electrons, these processes tend to take place within a few femtoseconds or several attoseconds. We investigate the charge transfer from Na+, Mg2+ and Al3+ in an aqueous environment to neighbouring water molecules. In order to achieve this, we use the core-hole clock method and Auger spectroscopy upon 1s ionization of the respective ions. The charge transfer times range from several 100 as below the 1s ionization threshold to only 20 as far above the 1s ionization. The decrease in charge transfer times as a function of the photon energy seems to be continuous. Despite the ions being isoelectronic in our study, we nd differences in their charge transfer behaviour.

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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