Effect of crystallites on surface potential variations of Au and graphite

Surfaces made of the nonreactive materials Au and graphite exhibit low surface potential variations after a low-temperature ultrahigh vacuum bake. The variations (due to the finite size crystallites of these materials) may be reduced to a minimum by using Au surfaces of grain size less than 10 nm an...

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Bibliographic Details
Published in:Journal of applied physics 1992-01, Vol.71 (2), p.783-785
Main Authors: CAMP, J. B, DARLING, T. W, BROWN, R. E
Format: Article
Language:English
Subjects:
360606 > Other Materials-- Physical Properties-- (1992-)
ANTIBARYONS
ANTIMATTER
ANTINUCLEI
ANTINUCLEONS
ANTIPARTICLES
ANTIPROTONS
Applied sciences
BARYONS
CARBON
COHERENT SCATTERING
Condensed matter: electronic structure, electrical, magnetic, and optical properties
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
ELEMENTAL MINERALS
ELEMENTARY PARTICLES
ELEMENTS
Exact sciences and technology
FERMIONS
GOLD
GRAIN ORIENTATION
GRAIN SIZE
GRAPHITE
HADRONS
HEAT TREATMENTS
MATERIALS SCIENCE
MATTER
METALS
Metals. Metallurgy
MICROSTRUCTURE
MINERALS
NONMETALS
NUCLEI
NUCLEONS
ORIENTATION
Physics
POLYCRYSTALS
POTENTIALS
SCATTERING
SIZE
Surface and interface electron states
SURFACE POTENTIAL
THIN FILMS
TRANSITION ELEMENTS 360104 > Metals & Alloys-- Physical Properties
X-RAY DIFFRACTION
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Description
Summary:Surfaces made of the nonreactive materials Au and graphite exhibit low surface potential variations after a low-temperature ultrahigh vacuum bake. The variations (due to the finite size crystallites of these materials) may be reduced to a minimum by using Au surfaces of grain size less than 10 nm and graphite surfaces with highly aligned c-axis orientation. Procedures where this may be accomplished are described. Application to the Los Alamos antiproton gravity experiment is presented.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.351358