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Journal of Physical Studies 16(4), Article 4301 [5 pages] (2012)
DOI: https://doi.org/10.30970/jps.16.4301 ELECTRON IMPACT IONIZATION OF THE METHANE MOLECULEM. I. Mykyta, A. N. Zavilopulo, O. B. Shpenik
Institute of Electron Physics, National Academy of Sciences of Ukraine, |
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The results of studying a dissociative ionization of the methane molecule by the electron impact are presented. The experiment was performed using the monopole mass spectrometer-based apparatus. The most likely pathways of the methane molecule fragmentation under a slow electron impact were analyzed. The efficiencies of creation of the molecular and ion fragments of the methane molecule were measured within the electron energy range of 6-90 eV. The appearance energies for relevant ions were determined from the experimental energy dependencies of ionization cross-sections using the least-squares approximation by means of the Levenberg-Marquardt algorithm.
PACS number(s): 34.80.Gs