Ultrafast charge transfer processes accompanying KLL Auger decay in aqueous KCl solution
Abstract
X-ray photoelectron spectroscopy (XPS) and KLL Auger spectra of aqueous KCl solution were measured for the K and Cl edges. While the XPS spectra of potassium and chloride have similar structures, both exhibiting only weak satellite structures near the main line, the Auger spectra of these isoelectronic ions differ dramatically. A very strong satellite peak was found in the K KLL Auger spectrum at the low kinetic energy side of the D state. Using equivalent core models and ab initio calculations this spectral structure was assigned to electron transfer processes from solvent water molecules to the solvated K cation. Contrary to the potassium case, no extra peak was found in the KLL Auger spectrum of solvated Cl indicating on a strong dependence of the underlying processes on ionic charge. The observed charge transfer processes are suggested to play an important role in charge redistribution following single and multiple core-hole creation in atomic and molecular systems placed into an environment.
Keywords
Cite
@article{arxiv.1704.00065,
title = {Ultrafast charge transfer processes accompanying KLL Auger decay in aqueous KCl solution},
author = {D. Céolin and N. V. Kryzhevoi and Ch. Nicolas and W. Pokapanich and S. Choksakulporn and P. Songsiriritthigul and Th. Saisopa and Y. Rattanachai and Y. Utsumi and J. Palaudoux and G. Öhrwall and J. P. Rueff},
journal= {arXiv preprint arXiv:1704.00065},
year = {2018}
}