Time-resolved Auger–Meitner spectroscopy of the photodissociation dynamics of CS2
Journal Article
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· Journal of Physics. B, Atomic, Molecular and Optical Physics
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- University of Southampton (United Kingdom)
- Elettra—Sincrotrone Trieste S.C.p.A., Basovizza (Italy)
- Politecnico di Milano (Italy); CNR-IFN—Istituto di Fotonica e Nanotecnologie, Milano (Italy)
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- CNR-ISM—Istituto Struttura della Materia, Trieste (Italy)
- Technical University of Denmark, Lyngby (Denmark)
- CNR-IOM—Istituto Officina dei Materiali, Trieste (Italy)
- CNR-IFN—Istituto di Fotonica e Nanotecnologie, Milano (Italy)
- University of Gothenburg (Sweden)
- STFC, Daresbury Laboratory, Warrington (United Kingdom)
- Politecnico di Milano (Italy)
- Kansas State University, Manhattan, KS (United States)
- National Research Council of Canada, Ottawa, ON (Canada); University of Ottawa, ON (Canada)
- Istituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Madrid (Spain)
- Elettra—Sincrotrone Trieste S.C.p.A., Basovizza (Italy); CNR-IOM—Istituto Officina dei Materiali, Trieste (Italy)
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).
- Research Organization:
- Kansas State University, Manhattan, KS (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- Independent Research Fund Denmark-Natural Sciences; Knut and Alice Wallenberg Foundation; Swedish Research Council; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB)
- Grant/Contract Number:
- AC02-76SF00515; FG02-86ER13491
- OSTI ID:
- 2452851
- Alternate ID(s):
- OSTI ID: 2447669
OSTI ID: 2574613
OSTI ID: 2919031
- Journal Information:
- Journal of Physics. B, Atomic, Molecular and Optical Physics, Journal Name: Journal of Physics. B, Atomic, Molecular and Optical Physics Journal Issue: 21 Vol. 57; ISSN 0953-4075; ISSN 1361-6455
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English