Glancing angle scattering and neutralization of a positron beam at metal surfaces

Journal Article · Mon Feb 09 04:00:00 EST 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.58.595· OSTI ID:7077973

Gidley, D W; Mayer, R; Frieze, W E; Lynn, K G

We have formed an energetic (10--100 eV) beam of positronium (Ps) by scattering a well-collimated, small-diameter beam of 30--400 eV positrons off surfaces of Al(110) and clean and oxygen-coated Cu(100) at glancing angles of 6/sup 0/--42/sup 0/ with respect to the surface. We determined the angular distribution (FWHM approx. =20/sup 0/) of the Ps beam and measured the relative Ps formation efficiency (3%--5%) as a function of incident positron beam energy and angle. Future uses of the Ps beam in atomic and surface physics will be discussed.

• Research Organization: Department of Physics, University of Michigan, Ann Arbor, Michigan 48109
• OSTI ID: 7077973
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 58:6; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
640303 -- Atomic
Molecular & Chemical Physics-- Positronium
Muonium
& Muonic & Mesic Atoms & Molecules
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BEAM NEUTRALIZATION
BEAMS
COATINGS
COLLISIONS
COPPER
EFFICIENCY
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 10-100
EV RANGE 100-1000
FERMIONS
INCIDENCE ANGLE
LEPTON BEAMS
LEPTONS
METALS
NONMETALS
OXYGEN
PARTICLE BEAMS
POSITRON BEAMS
POSITRON COLLISIONS
POSITRONIUM
POSITRONS
SCATTERING
TRANSITION ELEMENTS