High precision measurement of the muonium ground state hyperfine interval and the muon magnetic moment
The hfs interval of ground state muonium ..delta.. nu, and the ratio of the muon magnetic moment to that of the proton, ..mu../sub ..mu..//..mu../sub p/, have been measured with high precision by means of microwave magnetic resonance techniques at the Los Alamos Meson Physics Facility (LAMPF). Muonium was formed by stopping low momentum polarized positive muons in a resonant cavity containing Kr gas at 0.5 or 1 atm pressure. A strong static field at 13.6 kG was applied to split the four Zeeman levels in the ground state and the two transitions (designated 1..-->..2 and 3..-->..4) were induced by pulsing the microwave frequency between the two transition frequencies. The difference between nu/sub 34/ and nu/sub 12/ is directly related to the muon magnetic moment through known fundamental constants and yields the value. These are the most precise measurements of these quantities to date. In addition, the linear pressure shift coefficients of the two transitions have been determined. From the sum of these coefficients we find the fractional hfs pressure shift of muonium in Kr. The measured value of ..mu../sub ..mu..//..mu../sub p/ also yields the ratio of the mass of the muon to that of the electron.
- Research Organization:
- Yale Univ., New Haven, CT (USA)
- OSTI ID:
- 5913746
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Positronium
Muonium
& Muonic & Mesic Atoms & Molecules
645101 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
74 ATOMIC AND MOLECULAR PHYSICS
ACCELERATORS
DATA
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
FERMIONS
FLUIDS
GASES
GROUND STATES
HYPERFINE STRUCTURE
INFORMATION
KRYPTON
LAMPF LINAC
LEPTONS
LINEAR ACCELERATORS
MAGNETIC MOMENTS
MASS
MESON FACTORIES
MUONIUM
MUONS
NONMETALS
NUMERICAL DATA
PRESSURE DEPENDENCE
RARE GASES
REST MASS
SPECTRAL SHIFT