Gas--surface scattering cross section by the complex coordinate method

Journal Article · Wed May 01 04:00:00 EDT 1991 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.460421· OSTI ID:5619465

Engdahl, E; Maniv, T; Moiseyev, N ^[1]

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1. Department of Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel (IL)

The elastic scattering cross section of atomic beams from periodically rough solid surfaces is computed by means of a quantum-mechanical approach, based on the complex coordinate method. The effect of a threshold singularity in the specular scattering of helium beam from Cu(110) is found to yield a step structure in the scattering pattern, which should be observable experimentally. The calculated specular scattering pattern obtained, using a corrugated Morse potential with a simple one-dimensional corrugation function, is in a remarkable agreement with the experimental resonance line shapes of He beams from Cu(115) over the entire range of incident angles.

• OSTI ID: 5619465
• Journal Information: Journal of Chemical Physics; (USA), Journal Name: Journal of Chemical Physics; (USA) Vol. 94:9; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOM COLLISIONS
ATOMIC BEAMS
BEAMS
COLLISIONS
COPPER
CROSS SECTIONS
CRYSTAL FACES
ELASTIC SCATTERING
ELEMENTS
FLUIDS
GASES
HELIUM
INCIDENCE ANGLE
MECHANICS
METALS
MORSE POTENTIAL
NONMETALS
POTENTIALS
QUANTUM MECHANICS
RARE GASES
ROUGHNESS
SCATTERING
SURFACE PROPERTIES
TRANSITION ELEMENTS