Vacuum UV laboratory study of the photodissociation of CS

Xu, Zhongxing

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https://hdl.handle.net/2142/100532 Copy

Description

Title

Vacuum UV laboratory study of the photodissociation of CS

Author(s)

Xu, Zhongxing

Contributor(s)

• Ng, Cheuk-Yiu
• Jackson, William M.
• Crabtree, Kyle N.
• Chang, Yih-Chung

Issue Date

2018-06-21

Keyword(s)

Electronic structure, potential energy surfaces

Abstract

Photodissociation of carbon monosulfide (CS) in UV-dominated regions, including diffuse interstellar medium and protoplanetary regions, may produce metastable carbon and sulfur in 1S and 1D states, which could contribute internal energy to gas-phase chemical reactions. However, unlike its isoelectronic CO molecule, little is known about Vacuum UV (VUV) photodissociation of CS. In the present study, we investigated the C 1Σ + − X1Σ + band of CS. CS is generated by photolysis of CS2 and then adiabatically expanded into a vacuum chamber. The two-independently-tunable-VUV photodissociation-photoionization spectroscopy coupled with velocity map imaging (VMI) detection was used to measure state-specific photodissociation cross sections and atomic state branching fractions. Our experiment is the first quantitative study of CS in the VUV spectral region.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/100532

DOI

10.15278/isms.2018.RJ10

Copyright and License Information

Copyright 2018 Zhongxing Xu

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