Scattering of hydrogen, deuterium, and the rare gases from silver(111) single crystals

Journal Article · Mon Jan 01 04:00:00 EST 1973 · Surface Sci., v. 34, no. 2, pp. 268-288

DOI:https://doi.org/10.1016/0039-6028(73)90119-2· OSTI ID:4432250

Sau, R; Merrill, R P

The scattering of hydrogen, deuterium, and the rare gases from the (111) face of silver was studied in ultrahigh vacuum. Surfaces were prepared by argon ion bombardment and high-temperature annealing. Incident angles between 20 and 65 deg and surface temperatures between room temperature and 573 deg K were investigated. The scattering data exhibit quasi-elastic scattering (He, H/sub 2/ D/sub 2/) inelastic scattering (Ne, Ar, Kr), and trapping-dominated scattering (Xe). Identification of these scattering regimes correlates with D/kT/sub g/ and is consistent with similar data from Pt(111) and W(110). The separate effects of microscoplc surface roughness and thermal roughening were identified and thermal attenuation in the elastic regime correlated with dynamical interactions rather than thermal roughening. Trapping and rotational coupllng are discussed. Comparison of the data with scatterlng from epitaxial (111) silver indicates that the epitaxial surfaces are significantly more disordered than the single-crystal surfaces. (11 figures, 3 tables, 27 references) (auth)

• Research Organization: Univ. of California, Berkeley
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-001336
• OSTI ID: 4432250
• Journal Information: Surface Sci., v. 34, no. 2, pp. 268-288, Journal Name: Surface Sci., v. 34, no. 2, pp. 268-288; ISSN SUSCA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*ARGON-- SCATTERING
*DEUTERIUM-- SCATTERING
*HELIUM-- SCATTERING
*HYDROGEN-- SCATTERING
*KRYPTON-- SCATTERING
*NEON-- SCATTERING
*SILVER-- MOLECULE COLLISIONS
*XENON-- SCATTERING
ANGULAR DISTRIBUTION
MONOCRYSTALS
N60100* --Physics (Atomic & Molecular)--Atomic
Electron
Ion & Molecular Beams & Reactions
ROUGHNESS
SURFACES
TEMPERATURE DEPENDENCE
TRAPPING