Emission of muonium into vacuum from a silica powder layer

Journal Article · Mon Aug 11 04:00:00 EDT 1986 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.57.671· OSTI ID:5138941

Beer, G A; Marshall, G M; Mason, G R; Olin, A; Gelbart, Z; Kendall, K R; Bowen, T; Halverson, P G; Pifer, A E; Fry, C A; others, and

Muonium atoms have been observed in vacuum after emission from a layer of finely divided silica powder. By extrapolation of the decay positron track both the time and position of muon decay are measured, confirming thermal emission at room temperature. The yields range up to (19 +- 6)% of muons stopping in the layer, depending on its thickness. The result is used to recalculate the upper limit for conversion of muonium to antimuonium.

• Research Organization: University of Victoria, Victoria, British Columbia V6R2C9, Canada
• OSTI ID: 5138941
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 57:6; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640303* -- Atomic
Molecular & Chemical Physics-- Positronium
Muonium
& Muonic & Mesic Atoms & Molecules
74 ATOMIC AND MOLECULAR PHYSICS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
ATOM TRANSPORT
CHALCOGENIDES
COORDINATES
DECAY
ELEMENTARY PARTICLES
EMISSION
EXTRAPOLATION
FERMIONS
LAYERS
LEPTONS
MEDIUM TEMPERATURE
MINERALS
MUONIUM
MUONS
NEUTRAL-PARTICLE TRANSPORT
NUMERICAL SOLUTION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
POSITRONS
POWDERS
RADIATION TRANSPORT
SILICA
SILICON COMPOUNDS
SILICON OXIDES
THERMIONIC EMISSION
TIME MEASUREMENT
VACUUM SYSTEMS
YIELDS