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Core hole screening and decay rates of double core ionized first row hydrides

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Inhester, L., Groenhof, G., & Grubmüller, H. (2013). Core hole screening and decay rates of double core ionized first row hydrides. Journal of Chemical Physics, 138(16), 164304. https://doi.org/10.1063/1.4801660
Published in
Journal of Chemical Physics
Authors
Inhester, Ludger |
Groenhof, Gerrit |
Grubmüller, Helmut
Date
2013
Discipline
Fysikaalinen kemiaNanoscience CenterPhysical ChemistryNanoscience Center
Copyright
© 2013 AIP Publishing LLC. Published in this repository with the kind permission of the publisher.

 
Because of the high intensity, X-ray free electron lasers allow one to create and probe double core ionized states in molecules. The decay of these multiple core ionized states crucially determines the evolution of radiation damage in single molecule diffractive imaging experiments. Here we have studied the Auger decay in hydrides of first row elements after single and double core ionization by quantum mechanical ab initio calculations. In our approach the continuum wave function of the emitted Auger electron is expanded into spherical harmonics on a radial grid. The obtained decay rates of double K-shell vacancies were found to be systematically larger than those for the respective single K-shell vacancies, markedly exceeding the expected factor of two. This enhancement is attributed to the screening effects induced by the core hole. We propose a simple model, which is able to predict core hole decay rates in molecules with low Z elements based on the electron density in the vicinity of the core hole. ...
Publisher
American Institute of Physics
ISSN Search the Publication Forum
0021-9606
Keywords
MOLECULAR AUGER-SPECTRA INNER-SHELL LIFETIMES PHOTOELECTRON-SPECTRUM FLUORESCENCE YIELDS LINE-SHAPES STATE metaani atomit vesi neon
DOI
https://doi.org/10.1063/1.4801660
URI

http://urn.fi/URN:NBN:fi:jyu-201602041448

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/22980676

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