Direct inelastic scattering of oriented NO from Ag(111) and Pt(111)

A pulsed supersonic and cold oriented beam of NO molecules is incident upon the (111) face of clean Ag and Pt single crystal surfaces. The steric effect in the scattered density distributions is determined by a quadrupole mass spectrometer. It is found that the steric effect in the peak in the distr...

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Bibliographic Details
Published in:The Journal of chemical physics 1991-04, Vol.94 (7), p.5197-5207
Main Authors: TENNER, M. G, KUIPERS, E. W, KLEYN, A. W, STOLTE, S
Format: Article
Language:English
Subjects:
656003 - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-)
Atomic and molecular collision processes and interactions
Atomic and molecular physics
BEAMS
CHALCOGENIDES
COLLISIONS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTALS
ELEMENTS
Exact sciences and technology
INELASTIC SCATTERING
MASS SPECTROSCOPY
METALS
MOLECULAR BEAMS
MOLECULE COLLISIONS
MONOCRYSTALS
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORIENTATION
Other topics in atomic and molecular collision processes and interactions
OXIDES
OXYGEN COMPOUNDS
Physics
PLATINUM
PLATINUM METALS
SCATTERING
SILVER
SPECTROSCOPY
TRANSITION ELEMENTS
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Description
Summary:A pulsed supersonic and cold oriented beam of NO molecules is incident upon the (111) face of clean Ag and Pt single crystal surfaces. The steric effect in the scattered density distributions is determined by a quadrupole mass spectrometer. It is found that the steric effect in the peak in the distribution of direct inelastically scattered molecules depends linearly on the reflection angle. In all circumstances O-end collisions lead to scattering angles more inclined towards the surface than N-end collisions. For the Pt(111) surface a much stronger steric effect is measured than for the Ag(111) surface. The steric effect seems to scale with the incident normal velocity. These strong steric effects can be explained by the larger trapping probability for the N-end orientation and a leverage effect due to the high trapping probability.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.460556