Helium diffraction from tungsten (112)

Journal Article · Wed Dec 31 23:00:00 EST 1975 · J. Chem. Phys., v. 64, no. 1, pp. 34-40

DOI:https://doi.org/10.1063/1.431929· OSTI ID:4077180

Stoll, Jr, A G; Ehrhardt, J; Merrill, R P

The diffractive scattering of helium from W(112) in the 110 azimuth is presented for incidence angles from 20degree to 70degree, surface temperatures from 1000 to 1600 K, and beam temperatures from 300 to 650 K. The first order beams are the only nonspecular features observed and their angular positions and relative intensities are reproduced well by semiclassical scattering calculations. Debye--Waller analysis of thermal attenuation gives a surface Debye temperature lower than the bulk, but larger than that derived from electron scattering. (AIP)

• Research Organization: Department of Chemical Engineering, University of California, Berkeley, California 94720
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-021104
• OSTI ID: 4077180
• Journal Information: J. Chem. Phys., v. 64, no. 1, pp. 34-40, Journal Name: J. Chem. Phys., v. 64, no. 1, pp. 34-40; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

*HELIUM-- COLLISIONS
*TUNGSTEN-- ATOM COLLISIONS
640301* --Physics Research--Atomic
Molecular & Chemical Physics--Beams & Their Reactions
ANGULAR DISTRIBUTION
DEBYE-WALLER FACTOR
DIFFRACTION
HIGH TEMPERATURE
MEDIUM TEMPERATURE
N60100* --Physics (Atomic & Molecular)--Atomic
Electron
Ion & Molecular Beams & Reactions
N60200 --Physics (Atomic & Molecular)--Atomic & Molecular Properties
TEMPERATURE DEPENDENCE