Absolute dissociative electron attachment cross sections in acetylene and its deuterated analogue
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May, Olivier
Department of Chemistry, University of Fribourg, Switzerland
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Fedor, Juraj
Department of Chemistry, University of Fribourg, Switzerland
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Allan, Michael
Department of Chemistry, University of Fribourg, Switzerland
Published in:
- Chimia. - 2010, vol. 64, no. 3, p. 173-176
English
An instrument for the measurement of absolute dissociative electron attachment cross sections was constructed and applied to two prototype molecules, acetylene (C₂H₂) and deuterated acetylene (C₂D₂). The isotope effect at the first dissociative electron attachment band at 3 eV was determined-the cross section for C₂D⁻/C₂D₂ is 14.4 times smaller than that for C₂H⁻/C₂H₂. The results play a central role in validating recent theoretical work of Chourou and Orel. The dominant fragments at the second dissociative attachment band around 8 eV are the light fragments H⁻ or D⁻. These bands exhibit weaker isotope effects.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Chimie
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Language
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Classification
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Chemistry
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/301538
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