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Three-dimensional velocity map imaging of KBr surface photochemistry

  • We have combined the velocity map imaging technique with time-of-flight measurements to study the surface photochemistry of KBr single crystals. This approach yields 3-dimensional velocity distributions of Br atoms resulting from 193 nm photodesorption. The velocity distributions indicate that at least two non-thermal mechanisms contribute to the photodesorption dynamics. Our experimental geometry also allows us to measure the Br(²P₃⁄₂):Br(²P₁⁄₂) branching ratio, which is found to be 24:1.

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Metadaten
Author:Sven P. K. KöhlerORCiD, Yuanyuan Ji, Daniel J. AuerbachORCiD, Alec M. WodtkeORCiD
URN:urn:nbn:de:bsz:960-opus4-22914
DOI:https://doi.org/10.25968/opus-2291
DOI original:https://doi.org/10.1039/B909579A
ISSN:1463-9084
Parent Title (English):Physical Chemistry Chemical Physics
Publisher:Royal Society of Chemistry
Document Type:Article
Language:English
Year of Completion:2009
Publishing Institution:Hochschule Hannover
Release Date:2022/06/23
GND Keyword:Bildgebendes Verfahren; Kaliumbromid; Flugzeitspektrometrie; Photodesorption
Volume:35
Page Number:5
Institutes:Fakultät II - Maschinenbau und Bioverfahrenstechnik
DDC classes:660 Technische Chemie
Licence (German):License LogoUrheberrechtlich geschützt