An investigation of the ESD O/O + ratio from V 2 O 5 and oxidized V

Mitch Jacoby, F. J. Northrup, P. C. Stair, E. Weitz, L. D. Marks

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Abstract

The ratio of oxygen atoms to ions (O/O + ) generated during electron stimulated desorption (ESD) from V 2 O 5 and oxidized V foil has been investigated. Desorbates were probed directly with high resolution quadrupole mass spectrometry. X-ray photoelectron spectroscopy was used as an indirect probe to measure the ESD induced surface oxygen loss. Despite the number of ESD target preparation methods and experimental variations used, ESD O atoms were never detected. Accordingly, the results are presented as an upper limit to the ESD O/O + ratio, as determined by the neutral detection limit of the given instrumental method. The results of the mass spectral probe were an O/O + ratio of ≃ 54 (oxidized V foil), 58 ( 18 O 2 /V 2 O 5 ) and 160 (V 2 O 5 ). From the XPS results (oxidized V foil) the ratio was determined to be ≃ 4.

Original languageEnglish
Pages (from-to)23-32
Number of pages10
JournalApplied Surface Science
Volume108
Issue number1
DOIs
Publication statusPublished - Jan 1997

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ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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