Electron-induced vibrational excitation and dissociative electron attachment in methyl formate

0536844 - ÚFCH JH 2021 RIV GB eng J - Journal Article
Kumar, Ragesh Thelakkadan Puthiyaveettil - Kočišek, Jaroslav - Bravaya, K. - Fedor, Juraj
Electron-induced vibrational excitation and dissociative electron attachment in methyl formate.
Physical Chemistry Chemical Physics. Roč. 22, č. 2 (2020), s. 518-524. ISSN 1463-9076. E-ISSN 1463-9084
R&D Projects: GA ČR GA17-04844S
Institutional support: RVO:61388955
Keywords : cross-sections * glycolaldehyde * impact * states
OECD category: Physical chemistry
Impact factor: 3.676, year: 2020
Method of publishing: Limited access

We probe the low-energy electron collisions with methyl formate HCOOCH3, focusing on its resonant states. Experimentally, we (i) use two-dimensional electron energy loss spectroscopy to gain information about the vibrational excitation and (ii) report the absolute dissociative electron attachment cross sections. The electron scattering spectra reveal both the threshold effects due to the long-range electron-molecule interaction and a pronounced pi* resonance centered around 2.1 eV. This resonance gives rise to dissociative electron attachment into three different anionic channels, the strongest one being the production of the formate anion. Theoretically, we characterize this resonant state using the complex absorbing potential approach combined with multistate multireference perturbation theory, which predicts its position and width in excellent agreement with the experiment.
Permanent Link: http://hdl.handle.net/11104/0314593