Coulomb explosion of CD₃I induced by single photon deep inner-shell ionisation
|Author:||Wallner, M.1; Eland, J. H. D.1,2; Squibb, R. J.1;|
1Department of Physics, University of Gothenburg, Origovägen 6B, 412 58, Gothenburg, Sweden
2Department of Chemistry, Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
3Nano and Molecular Systems Research Unit, University of Oulu, P.O. Box 3000, FI-90014, Oulu, Finland
4Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, F-75005, Paris, Cedex 05, France
5Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
6Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192, Gif-sur-Yvette, Cedex, France
|Online Access:||PDF Full Text (PDF, 1.3 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe202102114494
|Publish Date:|| 2021-02-11
L-shell ionisation and subsequent Coulomb explosion of fully deuterated methyl iodide, CD₃I, irradiated with hard X-rays has been examined by a time-of-flight multi-ion coincidence technique. The core vacancies relax efficiently by Auger cascades, leading to charge states up to 16+. The dynamics of the Coulomb explosion process are investigated by calculating the ions’ flight times numerically based on a geometric model of the experimental apparatus, for comparison with the experimental data. A parametric model of the explosion, previously introduced for multi-photon induced Coulomb explosion, is applied in numerical simulations, giving good agreement with the experimental results for medium charge states. Deviations for higher charges suggest the need to include nuclear motion in a putatively more complete model. Detection efficiency corrections from the simulations are used to determine the true distributions of molecular charge states produced by initial L1, L2 and L3 ionisation.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
114 Physical sciences
This work has been financially supported by the Swedish Research Council (VR) and the Knut and Alice Wallenberg Foundation, Sweden. Open access funding provided by University of Gothenburg.
© The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.