(5) Hydrogen loss in aminobutanoic acid isomers by the σ* resonance formed in electron capture
Published in New Journal of Physics, 2012
The mechanism of a hydrogen loss reaction upon dissociative electron attachment to organic acids and amino acids has been a matter of controversy. In this study, we investigate this process for three isomers of aminobutanoic acid and the deuterated analogue of the α isomer (αAD) in the electron energy range 0–2.5 eV. We implement the resonant R-matrix theory, applying a one-dimensional model involving electron capture into the σ*(OH) orbital which reproduces convincingly the conspicuous features of the experimental cross sections, i.e. the pronounced cusps at the vibrational excitation threshold, the substantially different shapes of the three constitutional isomers and the characteristic differences between αA and its isotopologue αAD.
Recommended citation: Vizcaino, V., Puschnigg, B., Huber, S. E., Probst, M., Fabrikant, I. I., Gallup, G. A., Illenberger, E., Scheier, P., & Denifl, S. (2012). Hydrogen loss in aminobutanoic acid isomers by the σ* resonance formed in electron capture. New Journal of Physics, 14, 043017.
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