A Precise Measurement of the Muonium Ground State Hyperfine Structure Interval and the Muon Magnetic Moment
Abstract
Data-taking has been completed on a new high precision experiment at the Los Alamos Meson Physics Facility with the goal of determining the muonium (μ^+e^-) ground state hyperfine structure interval to ~ 10 ppb, and the muon to proton magnetic moment ratio to ~ 90 ppb, each corresponding to about a fourfold improvement. The experiment uses microwave magnetic resonance spectroscopy and improves on previous work(F. G. Mariam et al., Phys. Rev. Lett.) 49, 993 (1982). by using a chopped muon beam to obtain narrow resonance lines,(M. G. Boshier et al., Phys. Rev.) A52, 1948 (1995). a higher μ^+ beam intensity, a more homogeneous magnetic field, and an improved muon stopping distribution measurement. Resonance lines were recorded using both magnetic field and microwave frequency sweeping methods. The status of the analysis will be presented.
- Publication:
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APS Division of Atomic, Molecular and Optical Physics Meeting Abstracts
- Pub Date:
- May 1998
- Bibcode:
- 1998APS..DMP..F203B