Low-energy positron and electron diffraction and positron-stimulated secondary electron emission from Cu(100)

Thesis/Dissertation · Fri Dec 31 23:00:00 EST 1982

OSTI ID:7001458

Weiss, A H

The results of two series of experiments are reported. In the first, an electrostatically guided beam of low-energy (40-400 eV) positrons, delta/sub p/ was used to study low-energy positron diffraction (LEPD) from a Cu(100) surface under ultrahigh-vacuum conditions. Low-energy electron diffraction (LEED) data were obtained from the same sample in the same apparatus. Comparison of LEPD and LEED intensity versus energy data with model calculations made using computer programs developed by C.B. Duke and collaborators indicated that: LEPD data is adequately modeled using potentials with no exchange-correlation term. The inelastic mean free path, lambda/sub ee/, is shorter for positrons than for electrons at low (

• Research Organization: Brandeis Univ., Waltham, MA (USA)
• OSTI ID: 7001458
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR DISTRIBUTION
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
ATOMIC MODELS
COHERENT SCATTERING
COLLISIONS
COPPER
DATA
DIFFRACTION
DISTRIBUTION
ELECTRON COLLISIONS
ELECTRON DIFFRACTION
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
ENERGY RANGE
EV RANGE
EV RANGE 10-100
EV RANGE 100-1000
EXPERIMENTAL DATA
FERMIONS
INFORMATION
LEPTONS
MATHEMATICAL MODELS
METALS
NUMERICAL DATA
POSITRON COLLISIONS
POSITRONS
POTENTIALS
SCATTERING
SECONDARY EMISSION
SPECTRA
TRANSITION ELEMENTS
YIELDS