Observation of elastic scattering of positrons and electrons at glancing incidence

Journal Article · Thu Oct 01 04:00:00 EDT 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.36.5659· OSTI ID:6269639

Mayer, R; Zhang, C S; Lynn, K G; Throwe, J; Marcus, P M; Gidley, D W; Jona, F

Elastic intensity versus energy (I-V) spectra have been observed using both positrons and electrons scattered at glancing incidence (83/sup 0/--56/sup 0/ with respect to the surface normal) in the energy range of 50--450 eV from a variety of metallic and alkali-metal-halide surfaces. Unlike the electron spectra under the same conditions, all glancing-angle positron I-V spectra have broad (greater than or equal to100 eV) features. The enhanced broadening is associated with the reduced penetration depth of the elastically scattered positrons. Peak positions and widths fit a quasikinematic calculation of the intensity for Cu(100).

• Research Organization: Department of Physics, Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 6269639
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:10; 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
ALUMINIUM
COLLISIONS
COPPER
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELEMENTS
ENERGY DEPENDENCE
ENERGY RANGE
EV RANGE
EV RANGE 10-100
EV RANGE 100-1000
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
METALS
NICKEL
POSITRON COLLISIONS
SCATTERING
SODIUM COMPOUNDS
SODIUM FLUORIDES
TRANSITION ELEMENTS
TUNGSTEN