| Dissociative electron attachment to acetaldehyde, CH(3)CHO. A laboratory study using the velocity map imaging technique. | |
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MedLine Citation:
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PMID: 23212656 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A detailed experimental investigation of the dissociative electron attachment (DEA) process to acetaldehyde, CH(3)CHO is presented. To investigate this process we use a time of flight spectrometer coupled with the velocity slice imaging technique. DEA in CH(3)CHO is found to lead to the formation of CH(3)(-), O(-), OH(-), C(2)H(-), C(2)HO(-) and CH(3)CO(-) anionic products produced through scattering resonances in the electron energy range of 6 to 13 eV. Of these product ions only O(-) is formed with any measurable kinetic energy distribution indicating a two-body dissociation process. CH(3)CO(-), although formed with very low kinetic energy, shows anisotropy in the velocity slice image, indicating ejection of the H atom in the 180° direction with respect to the electron beam. The low kinetic energy distributions and absence of any anisotropy in the angular distributions of the other product ions indicate that they are formed through multiple fragmentation of the transient molecular negative ion. The angular distribution of O(-) is analysed in terms of the various partial waves. |
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Authors:
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Ewelina Szymańska; Vaibhav S Prabhudesai; Nigel J Mason; E Krishnakumar |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-12-5 |
Journal Detail:
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Title: Physical chemistry chemical physics : PCCP Volume: - ISSN: 1463-9084 ISO Abbreviation: Phys Chem Chem Phys Publication Date: 2012 Dec |
Date Detail:
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Created Date: 2012-12-5 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100888160 Medline TA: Phys Chem Chem Phys Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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The Open University, Department of Physical Sciences, Walton Hall, Milton Keynes, MK7 6AA, UK. n.j.mason@open.ac.uk. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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