Emission of muonium into vacuum from a silica powder layer

Journal Article · Mon Aug 11 00:00:00 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), Vol. 57:6
• Country of Publication: United States
• Language: English

Related Subjects

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