Measurement of the Debye-Waller factor for He-LiF(001)

Journal Article · Wed Jun 15 00:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.10374· OSTI ID:5155574

Vidali, G; Hutchings, C

We have measured the attenuation of a supersonic helium beam scattered from the (001) surface of LiF as a function of surface temperature. We found that over an extended temperature range (140--500 K) a simple model for the Debye-Waller factor can explain the data. At higher temperatures (500--650 K) anharmonic effects become noticeable. Our data indicate that present models describing the Debye-Waller attenuation need improvements in this temperature range. The observed sudden drop of the He-beam reflected intensity at about 780 K is discussed in terms of surface disorder.

• Research Organization: Laboratory of Surface and Low Temperature Physics, Syracuse University, 201 Physics Building, Syracuse, New York 13244-1130
• OSTI ID: 5155574
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:17; ISSN PRBMD
• 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
ALKALI METAL COMPOUNDS
ATOM COLLISIONS
ATTENUATION
COLLISIONS
CRYSTAL FACES
DEBYE-WALLER FACTOR
ELASTIC SCATTERING
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELEMENTS
EQUIPMENT
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
GASES
HALIDES
HALOGEN COMPOUNDS
HELIUM
HIGH TEMPERATURE
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
LOW TEMPERATURE
MEDIUM TEMPERATURE
NONMETALS
RARE GASES
SCATTERING
TEMPERATURE DEPENDENCE