Bazin, Marc; Ptasińska, Sylwia; Bass, Andrew D. and Sanche, Leon
(2009).
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| DOI (Digital Object Identifier) Link: | http://dx.doi.org/doi:10.1039/b814219j |
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| Google Scholar: | Look up in Google Scholar |
Abstract
Low energy electron induced dissociation of condensed nitromethane was investigated by measuring the electron stimulated desorption of anions and cations from multilayer films of CH3NO2 and CD3NO2, using a recently constructed, high sensitivity time of flight mass spectrometer. The desorbed yields were measured as a function of incident electron energy in the range between 1 to 20 eV and as function of coverage on Pt and Xe substrates. In anion desorption experiments, the following ions were observed: H? (D?), O?, OH? (OD?), CN?, NCO?, NO2?, CHNO2? (CDNO2?), CH2NO2? (CD2NO2?). Resonant structure seen in all anion yield functions, is attributed to dissociative electron attachment (DEA), though certain anion signals [e.g., OH? (OD?) and CH2NO2? (CD2NO2?)] are likely the result of reactive scattering by O? ions. The dominant desorbed cation signals are CD3+ and NO+, and the appearance potentials of these species were measured to be 12.2 and 11.5 eV, respectively. The present measurements provide information on how the electron-induced dissociation processes of this proto-typical explosive molecule are modulated by the condensed environment and on how initial dissociation events occurring on a particular molecule, may induce further dissociation.
| Item Type: | Journal Article |
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| Copyright Holders: | 2009 the Owner Societies |
| ISSN: | 1463-9076 |
| Academic Unit/Department: | Science > Physical Sciences |
| Interdisciplinary Research Centre: | Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR) |
| Item ID: | 24483 |
| Depositing User: | Tracy Bartlett |
| Date Deposited: | 11 Nov 2010 11:36 |
| Last Modified: | 19 Dec 2012 09:48 |
| URI: | http://oro.open.ac.uk/id/eprint/24483 |
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