Open AccessFormation of positive and negative ions in the gas phase of D-ribose by low-energy electrons
Author(s) -
И. В. Чернышова,
J. E. Kontros,
О. Б. Шпеник,
S. Demes
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1412/13/132054
Subject(s) - ion , ionization , electron ionization , molecule , chemistry , atomic physics , electron , ionization energy , range (aeronautics) , chemical ionization , mass spectrometry , cross section (physics) , low energy , materials science , physics , organic chemistry , chromatography , quantum mechanics , composite material
Synopsis Using a hypocycloidal electron spectrometer the total dissociative electron attachment cross section and the ionization cross section for D-ribose molecule were studied in the E<30 eV energy range. A clear structure near zero energy and in the 6.0-9.5 eV range is observed in the dissociative electron attachment cross section. These features appear due to the formation of negative ion fragments of the molecule. The ionization potential of the D-ribose molecule was determined at 9.74 ± 0.02 eV. In the total ionization cross section weak features are observed, which most likely due to the formation of positive ion fragments of the initial molecule.