Adsorption of hydrogen on clean and oxidized beryllium studied by direct recoil spectrometry

S. Zalkind, M. Polak, N. Shamir

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Direct monitoring of hydrogen adsorption on clean and on pre-oxidized polycrystalline beryllium by means of direct recoil spectrometry (DRS) is reported. While no adsorption occurs for molecular hydrogen either on clean or on oxidized beryllium, atomic hydrogen adsorbs on the surface of clean Be, as well as at the sites available between oxygen clusters, formed by low oxygen pre-exposure. For higher oxygen pre-exposures, when oxide islands are formed, the apparent coverage of hydrogen is significantly lower than the amount needed for complementary full coverage on the Be surface. Possible origins for this observation are discussed.

Original languageEnglish
Pages (from-to)273-278
Number of pages6
JournalApplied Surface Science
Volume115
Issue number3
DOIs
StatePublished - 1 Jan 1997

ASJC Scopus subject areas

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

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