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Title: Crossed-beam DC slice imaging of fluorine atom reactions with linear alkanes

Abstract

We report the reaction dynamics of F atom with selected alkanes studied by crossed beam scattering with DC slice ion imaging. The target alkanes are propane, n-butane, and n-pentane. The product alkyl radicals are probed by 157 nm single photon ionization following reaction at a collision energy of ∼10 kcal mol{sup −1}. The analyzed data are compared with the corresponding theoretical studies. Reduced translational energy distributions for each system show similar trends with little of the reaction exoergicity appearing in translation. However, the pentane reaction shows a somewhat smaller fraction of available energy in translation than the other two, suggesting greater energy channeled into pentyl internal degrees of freedom. The center-of-mass angular distributions all show backscattering as well as sharp forward scattering that decreases in relative intensity with the size of the molecule. Possible reasons for these trends are discussed.

Authors:
; ; ;  [1]
  1. Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202 (United States)
Publication Date:
OSTI Identifier:
22415772
Resource Type:
Journal Article
Journal Name:
Journal of Chemical Physics
Additional Journal Information:
Journal Volume: 142; Journal Issue: 18; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-9606
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ALKYL RADICALS; ANGULAR DISTRIBUTION; ATOMS; BACKSCATTERING; BUTANE; COMPARATIVE EVALUATIONS; DEGREES OF FREEDOM; ENERGY SPECTRA; FLUORINE; MOLECULES; PENTANE; PHOTOIONIZATION; PROBES; PROPANE

Citation Formats

Shi, Yuanyuan, Kamasah, Alexander, Joalland, Baptiste, and Suits, Arthur G., E-mail: asuits@chem.wayne.edu. Crossed-beam DC slice imaging of fluorine atom reactions with linear alkanes. United States: N. p., 2015. Web. doi:10.1063/1.4919099.
Shi, Yuanyuan, Kamasah, Alexander, Joalland, Baptiste, & Suits, Arthur G., E-mail: asuits@chem.wayne.edu. Crossed-beam DC slice imaging of fluorine atom reactions with linear alkanes. United States. doi:10.1063/1.4919099.
Shi, Yuanyuan, Kamasah, Alexander, Joalland, Baptiste, and Suits, Arthur G., E-mail: asuits@chem.wayne.edu. Thu . "Crossed-beam DC slice imaging of fluorine atom reactions with linear alkanes". United States. doi:10.1063/1.4919099.
@article{osti_22415772,
title = {Crossed-beam DC slice imaging of fluorine atom reactions with linear alkanes},
author = {Shi, Yuanyuan and Kamasah, Alexander and Joalland, Baptiste and Suits, Arthur G., E-mail: asuits@chem.wayne.edu},
abstractNote = {We report the reaction dynamics of F atom with selected alkanes studied by crossed beam scattering with DC slice ion imaging. The target alkanes are propane, n-butane, and n-pentane. The product alkyl radicals are probed by 157 nm single photon ionization following reaction at a collision energy of ∼10 kcal mol{sup −1}. The analyzed data are compared with the corresponding theoretical studies. Reduced translational energy distributions for each system show similar trends with little of the reaction exoergicity appearing in translation. However, the pentane reaction shows a somewhat smaller fraction of available energy in translation than the other two, suggesting greater energy channeled into pentyl internal degrees of freedom. The center-of-mass angular distributions all show backscattering as well as sharp forward scattering that decreases in relative intensity with the size of the molecule. Possible reasons for these trends are discussed.},
doi = {10.1063/1.4919099},
journal = {Journal of Chemical Physics},
issn = {0021-9606},
number = 18,
volume = 142,
place = {United States},
year = {2015},
month = {5}
}