Electron stimulated desorption of H− ions from condensed acetic acid

Bertin, M.; Caceres, D.; Lafosse, A.; Azria, R.; Davis, M. P.; Mason, N. J.; Balog, R. and Illenberger, E. (2007). Electron stimulated desorption of H− ions from condensed acetic acid. Chemical Physics Letters, 433(4-6) pp. 292–295.

DOI: https://doi.org/10.1016/j.cplett.2006.11.052

Abstract

The interaction between low energy electrons and condensed acetic acid has been investigated considering H− and D− ions Electron Stimulated Desorption from the three isotopic forms CD3COOD, CD3COOH and CH3COOD. For all isotopic forms the yields of desorbing H−(D−) ions are nearly identical, peaking at an incident electron energy of 9.75 eV, and no differences are observed in H−(D−) kinetic energy distributions. The intensities of H− and D− ion signals from CD3COOH and CH3COOD suggest a selectivity in the production of ions, that seems more efficient from the acid group –COOH(D) than from the methyl group –CH(D)3 of these molecules.

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