Ultrafast Charge Transfer Processes Accompanying $KLL$ Auger Decay in Aqueous KCl Solution

Ultrafast Charge Transfer Processes Accompanying $K L L$ Auger Decay in Aqueous KCl Solution

D. Céolin, N. V. Kryzhevoi, Ch. Nicolas, W. Pokapanich, S. Choksakulporn, P. Songsiriritthigul, T. Saisopa, Y. Rattanachai, Y. Utsumi, J. Palaudoux, G. Öhrwall, and J.-P. Rueff

Phys. Rev. Lett. 119, 263003 – Published 29 December 2017

Abstract

X-ray photoelectron and $K L L$ Auger spectra were measured for the $K^{+}$ and ${Cl}^{-}$ ions in aqueous KCl solution. While the XPS spectra of these ions have similar structures, both exhibiting only weak satellites near the main line, the Auger spectra differ dramatically. Contrary to the chloride case, a very strong extra peak was found in the Auger spectrum of $K^{+}$ at the low kinetic energy side of the ${}^{1}D$ state. Using the equivalent core model and ab initio calculations this spectral feature was assigned to electron transfer processes from solvent water molecules to the solvated cation. The observed charge transfer processes are suggested to play an important role in charge redistribution following single and multiple core-hole creation in atoms and molecules placed into environment.

Received 16 June 2017

DOI:https://doi.org/10.1103/PhysRevLett.119.263003

Physics Subject Headings (PhySH)

Autoionization & Auger processes Electronic excitation & ionization

Atomic, Molecular & Optical

Authors & Affiliations

D. Céolin¹, N. V. Kryzhevoi^2,*, Ch. Nicolas¹, W. Pokapanich³, S. Choksakulporn³, P. Songsiriritthigul⁴, T. Saisopa⁴, Y. Rattanachai⁵, Y. Utsumi¹, J. Palaudoux^6,7, G. Öhrwall⁸, and J.-P. Rueff^1,6,7

¹Synchrotron SOLEIL, l’Orme des Merisiers, Saint-Aubin, F-91192 Gif-sur-Yvette Cedex, France
²Theoretical Chemistry, Institute of Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
³Faculty of Science, Nakhon Phanom University, Nakhon Phanom 48000 Thailand
⁴NANOTEC-SUT Center of Excellence on Advanced Functional Nanomaterials and School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
⁵Department of Applied Physics, Faculty of Sciences and Liberal Arts, Rajamangala University of Technology Isan, Nakhon Ratchasima 30000, Thailand
⁶CNRS, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France
⁷Sorbonne Universités, UPMC Université Paris 06, UMR 7614, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005 Paris, France
⁸MAX IV Laboratory, Lund University, P.O. Box 118, SE-22100 Lund, Sweden

^*Corresponding author. nikolai.kryzhevoi@pci.uni-heidelberg.de

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Issue

Vol. 119, Iss. 26 — 29 December 2017

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