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  Quantum state-resolved gas/surface reaction dynamics probed by reflection absorption infrared spectroscopy.

Chen, L., Ueta, H., Bisson, R., & Beck, R. D. (2013). Quantum state-resolved gas/surface reaction dynamics probed by reflection absorption infrared spectroscopy. Review of Scientific Instruments, 84(5): 053902. doi:10.1063/1.4803933.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-F7F4-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-9160-3
Genre: Journal Article

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 Creators:
Chen, L.1, Author              
Ueta, H., Author
Bisson, R., Author
Beck, R. D., Author
Affiliations:
1Department of Dynamics at Surfaces, MPI for Biophysical Chemistry, Max Planck Society, ou_578600              

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 Abstract: We report the design and characterization of a new molecular-beam/surface-science apparatus for quantum state-resolved studies of gas/surface reaction dynamics combining optical state-specific reactant preparation in a molecular beam by rapid adiabatic passage with detection of surface-bound reaction products by reflection absorption infrared spectroscopy (RAIRS). RAIRS is a non-invasive infrared spectroscopic detection technique that enables online monitoring of the buildup of reaction products on the target surface during reactant deposition by a molecular beam. The product uptake rate obtained by calibrated RAIRS detection yields the coverage dependent state-resolved reaction probability S(theta). Furthermore, the infrared absorption spectra of the adsorbed products obtained by the RAIRS technique provide structural information, which help to identify nascent reaction products, investigate reaction pathways, and determine branching ratios for different pathways of a chemisorption reaction. Measurements of the dissociative chemisorption of methane on Pt(111) with this new apparatus are presented to illustrate the utility of RAIRS detection for highly detailed studies of chemical reactions at the gas/surface interface.

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Language(s): eng - English
 Dates: 2013-05-092013-05
 Publication Status: Published in print
 Pages: 9
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1063/1.4803933
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Title: Review of Scientific Instruments
Source Genre: Journal
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Pages: - Volume / Issue: 84 (5) Sequence Number: 053902 Start / End Page: - Identifier: -