Time-resolved Auger–Meitner spectroscopy of the photodissociation dynamics of CS2
Year: 2024
Type: article
Abstract: The photodissociation dynamics of UV excited CS2 are investigated using time-resolved Auger–Meitner (AM) spectroscopy. AM decay is initiated by inner-shell ionisation with a femtosecond duration x-ray (179.9 eV) probe generated by the FERMI free electron laser. The time-delayed x-ray probe removes an electron from the S(2p) orbital leading to secondary emission of a high energy electron through AM decay. We monitor the electron kinetic energy of the AM emission as a function of pump-probe delay and observe time-dependent changes in the spectrum that correlate with the formation of bound, excited-state CS2 molecules at early times, and CS + S fragments on the picosecond timescale. The results are analysed based on a simplified kinetic scheme that provides a time constant for dissociation of approximately 1.2 ps, in agreement with previous time-resolved x-ray photoelectron spectroscopy measurements (Gabalski, et al 2023 J. Phys. Chem. Lett. 14 7126–7133).
Authors: Henry J Thompson, Oksana Plekan, Matteo Bonanomi, Nitish Pal, Felix Allum, Alexander D Brynes, Marcello Coreno, Sonia Coriani, Miltcho B Danailov, Piero Decleva, Alexander Demidovich, Michele Devetta, Davide Faccialà, Raimund Feifel, Ruaridh Forbes, Cesare Grazioli, David M P Holland, Paolo Piseri, Kevin C Prince, Daniel Rolles, Michael S Schuurman, Alberto Simoncig, Richard J Squibb, Bruno N C Tenorio, Caterina Vozzi, Marco Zangrando, Carlo Callegari, Russell S Minns, Michele Di Fraia
Institution: Technical University of Denmark
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,165
Funders: U.S. Department of Energy, Leverhulme Trust, University of Southampton, European Commission, Ministero dell’Istruzione, dell’Università e della Ricerca, Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, Office of Science, Engineering and Physical Sciences Research Council, Science and Technology Facilities Council, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division, EPSRC Centre for Doctoral Training in Technology Enhanced Chemical Synthesis, SLAC National Accelerator Laboratory
Awards: G1229526393, G1286251239, G1815137805, G2141699229, G222768804, G2371548206, G262532246, STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES, G303061748, G333714909, G3826261775, G4005691891, G4235786860, G4473368111, G495301720, G498139845, Reactive intermediates in dicationic and higher charge states, Next Generation Experiment and Theory for Photoelectron Spectroscopy, G5570207115, G5648016710, G5996689310, G6550344761, G6970437531, ATOMIC PHYSICS WITH HIGHLY CHARGED IONS, G7283024673, G7331630580, G7938408761, G8382000481, G8726098666, G8945569637, G911061179, G969889393, STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES
OpenAlex ID: W4402737207