Electron-impact ionization cross section of formic acid

0492266 - ÚFCH JH 2019 RIV DE eng J - Journal Article
Zawadzki, Mateusz
Electron-impact ionization cross section of formic acid.
European Physical Journal D. Roč. 72, JAN 2018 (2018), č. článku 12. ISSN 1434-6060. E-ISSN 1434-6079
R&D Projects: GA ČR GJ16-10995Y; GA ČR GA17-04844S
Institutional support: RVO:61388955
Keywords : electron-impact ionization * photoionization * scattering
OECD category: Physical chemistry
Impact factor: 1.331, year: 2018
Method of publishing: Open access

Experimental electron-impact ionization cross sections of one of the simplest carboxylic acids, formic acid, are presented. The molecular target was studied in two independent experimental setups applying different methods: the total ion collection and the electron–impact mass spectrometry methods. Experimental data were taken at incident electron energies ranging from ionization threshold [11.31 eV, J.C. Traeger, Int. J. Mass Spectrom. Ion Process. 66, 271 (1985)] to 76 eV using a total cross section of 4.0 Å2 at 70 eV for the total ion collection method. In the spectrometric method the four main cations COH+, HCOOH+, COOH+ and CO+ are found to contribute to about 97% of the total ionization cross section.
Permanent Link: http://hdl.handle.net/11104/0285796