Electron-impact dissociation cross sections for CHF3 and C 3F8

J. E. Baio, H. Yu, D. W. Flaherty, H. F. Winters, D. B. Graves

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Absolute total dissociation cross sections, σt,diss, by electron-impact are reported for CHF3 and C3F8 from 10 to 300 eV using the chemical gettering technique described by Winters and Inokuti (1982 Phys. Rev. A 25 1420). Data are concentrated in the near-threshold region (10-30 eV). The thresholds for dissociation of CHF 3 and C3F8 are determined to be 10.4 eV and 11.9 eV, respectively. Ionization thresholds occur at 16 eV for CHF3 and 16.2 eV for C3F8. Neutral dissociation cross sections of both CHF3 and C3F8 are obtained by subtracting the ionization cross sections, σt,ion, from the total dissociation cross sections, σt,diss.

Original languageEnglish (US)
Pages (from-to)6969-6974
Number of pages6
JournalJournal of Physics D: Applied Physics
Issue number22
StatePublished - Nov 21 2007
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films


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