Time-of-flight scattering and recoiling spectrometry. II. The structure of oxygen on the W(211) surface

Journal Article · Wed Nov 15 04:00:00 EST 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.10147· OSTI ID:5250966

Bu, H; Grizzi, O; Shi, M; Rabalais, J W ^[1]

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1. Department of Chemistry, University of Houston, Houston, Texas 77204-5641 (US)

The technique of time-of-flight scattering and recoiling spectrometry (TOF-SARS) with detection of both neutrals and ions is applied to structural analysis of oxygen adsorbed on a W(211) surface. The site position for oxygen in the high-dose ({Theta}=1.5 monolayers (ML), saturation coverage) {ital p}(1{times}2) low energy electron diffraction (LEED) pattern is determined; a preliminary study of oxygen in the low-dose ({Theta}=0.5 ML) {ital p}(2{times}1) LEED pattern is also presented. Both Ar and Ne backscattering (BS) and oxygen recoiling spectra, induced by pulsed 4-keV Ar{sup +} and 5-keV Ne{sup +} primary-ion beams, are monitored as a function of polar beam incident angle {alpha}, surface azimuthal angle {delta}, scattering angle {theta}, and recoiling angle {phi}. Plots of BS (or recoil) intensities in ({alpha},{delta}) space provide scattering (or recoiling) structural contour maps and three-dimensional scattering (or recoiling) structural plots which are representative of the adsorption sites of oxygen on the W(211) surface; the symmetry of the adsorption sites is determined from these plots.

• OSTI ID: 5250966
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:15; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADSORPTION
ARGON IONS
BOND LENGTHS
CHARGED PARTICLES
COHERENT SCATTERING
COLLISIONS
DIFFRACTION
DIMENSIONS
ELECTRON DIFFRACTION
ELEMENTS
ENERGY RANGE
ION COLLISIONS
IONS
KEV RANGE
KEV RANGE 01-10
LENGTH
METALS
NEON IONS
NONMETALS
OXYGEN
RECOILS
SCATTERING
SIMULATION
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TIME-OF-FLIGHT METHOD
TRAJECTORIES
TRANSITION ELEMENTS
TUNGSTEN