Low-energy helium diffraction studies of CO2 overlayers physisorbed on NaCl(001)

Gang-yu Liu, Gary N. Robinson, Giacinto Scoles, Paul A. Heiney

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


Low-energy helium diffraction experiments have revealed that CO2 physisorbs on NaCl(001) at low temperatures to form distinct phases at low and high coverages. The structures of both phases are commensurate with the underlying NaCl(001) substrate. The low-coverage phase consists of a rectangular 1 × 2 unit mesh whereas the unit mesh of the high-coverage, monolayer phase is 2√2 × 2√2 R45°. The diffraction results and structural models are discussed in relation to recent infrared spectroscopic studies of CO2/NaCl(001).

Original languageEnglish (US)
Pages (from-to)409-421
Number of pages13
JournalSurface Science
Issue number3
StatePublished - Feb 15 1992
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces


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