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

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

doi:10.1016/0039-6028(92)90137-U

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 journal › Article

23 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	409-421
Number of pages	13
Journal	Surface Science
Volume	262
Issue number	3
DOIs	https://doi.org/10.1016/0039-6028(92)90137-U
State	Published - Feb 15 1992
Externally published	Yes

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ASJC Scopus subject areas

Physical and Theoretical Chemistry
Condensed Matter Physics
Surfaces and Interfaces

Cite this

Liu, G., Robinson, G. N., Scoles, G., & Heiney, P. A. (1992). Low-energy helium diffraction studies of CO₂ overlayers physisorbed on NaCl(001). Surface Science, 262(3), 409-421. https://doi.org/10.1016/0039-6028(92)90137-U

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AU - Scoles, Giacinto

AU - Heiney, Paul A.

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N2 - 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).

AB - 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).

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10.1016/0039-6028(92)90137-U