Journal Article

PUBDB-2022-00165

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Time resolved detection of the S($^1$D) product of the UV induced dissociation of CS$_2$

Warne, E. M.Extern* ; Smith, A. D. ; Horke, D. A.Extern*XFEL.EU*DESY* ; Springate, E. ; Jones, A. J. H. ; Cacho, C. ; Chapman, R. T. ; Minns, R. (Corresponding author)Extern*XFEL.EU*

2021
American Institute of Physics Melville, NY

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Please use a persistent id in citations: doi:10.1063/5.0035045  doi:10.3204/PUBDB-2022-00165

Abstract: The products formed following the photodissociation of UV (200 nm) excited CS$_2$ are monitored in a time resolved photoelectron spectroscopy experiment using femtosecond XUV (21.5 eV) photons. By spectrally resolving the electrons, we identify separate photoelectron bands related to the CS$_2$ + hν → S($^1$D) + CS and CS$_2$ + hν → S($^3$P) + CS dissociation channels, which show different appearance and rise times. The measurements show that there is no delay in the appearance of the S(1D) product contrary to the results of Horio et al. [J. Chem. Phys. 147, 013932 (2017)]. Analysis of the photoelectron yield associated with the atomic products allows us to obtain a S($^3$P)/S($^1$D) branching ratio and the rate constants associated with dissociation and intersystem crossing rather than the effective lifetime observed through the measurement of excited state populations alone.

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Contributing Institute(s):

1. CFEL-CMI (FS-CFEL-CMI)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. AIM - CUI: Advanced Imaging of Matter (390715994) (390715994)
3. COMOTION - Controlling the Motion of Complex Molecules and Particles (614507) (614507)
4. IVF - Impuls- und Vernetzungsfonds (IVF-20140101) (IVF-20140101)

Experiment(s):

1. Experiments at CFEL

Appears in the scientific report 2021

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; National-Konsortium ; Nationallizenz ; PubMed Central ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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