Time-of-flight scattering and recoiling spectrometry. III. The structure of hydrogen 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.40.10163· OSTI ID:5306311

Shi, M; Grizzi, O; Bu, H; Rabalais, J W ^[1]; Rye, R R ^[2]; Nordlander, P ^[3]

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1. Department of Chemistry, University of Houston, Houston, Texas 77204-5641 (USA)
2. Sandia National Laboratory, Albuquerque, New Mexico 87185 (USA)
3. Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08855-0849 (USA)

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 hydrogen adsorbed at saturation coverage on a W(211) surface in the temperature range 100 {degree}C to 200 {degree}C. Scattering and recoiling spectra, induced by pulsed Ne{sup +} and Ar{sup +} primary-ion beams, are monitored as a function of polar beam incident angle {alpha}, surface azimuthal angle {delta}, scattering angle {theta}, recoiling angle {phi}, and ejection angle {beta}. Plots of hydrogen recoil intensities in ({alpha},{delta}) space provide recoiling structural contour maps and recoiling structural plots which are representative of the recoil symmetry of hydrogen on the W(211) surface. Measurements of recoil (both direct and surface recoils) intensities as a function of {alpha} and {beta} along different azimuths {delta} provide experimental values of the critical incident angle {alpha}{sub {ital c},sh} for shadowing and the critical ejection angle {beta}{sub {ital c}} (or {alpha}{sub {ital c},bl}) for blocking by neighboring atoms.

• OSTI ID: 5306311
• 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
ADSORPTION
ARGON IONS
CHARGED PARTICLES
COLLISIONS
ELEMENTS
HIGH TEMPERATURE
HYDROGEN
ION COLLISIONS
IONS
MEDIUM TEMPERATURE
METALS
NEON IONS
NONMETALS
RECOILS
SATURATION
SIMULATION
SORPTION
SURFACE PROPERTIES
TIME-OF-FLIGHT METHOD
TRAJECTORIES
TRANSITION ELEMENTS
TUNGSTEN