A precision experiment on the Zeeman Energy levels of ground state muonium
- Lawrence Livermore National Lab., CA (United States); and others
An experiment is in progress at the Los Alamos Meson Physics Facility (LAMPF) to determine with high precision the hyperfine structure interval {Delta}{nu} (to {approximately} 10 ppb) and the muon to proton magnetic moment ratio {mu}{sub {mu}}/{mu}{sub p} (to {approximately} 60 ppb) in the ground state of muonium ({mu}{sup +}e). These goals correspond to increases in precision of {Delta}{nu} and of {mu}{sub {mu}}/{mu}{sub p} by about a factor of 5 compared to present knowledge, which will provide the most precise test of bound-state QED for a two-lepton system and new values for the muon mass and the fine structure constant {alpha}. The experimental method is microwave magnetic resonance spectroscopy and it uses the {open_quotes}old muonium{close_quotes} line-narrowing technique. During runs in 1994 and 1995 with a total beam time of about 3 mos., data were taken with stopping Kr gas pressures of 0.5, 1.0 and 1.5 atm. Some 40,000 resonance lines were obtained. The status of the experiment and of the authors analysis of the data will be reported.
- OSTI ID:
- 394306
- Report Number(s):
- CONF-9605105--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 41; ISSN 0003-0503; ISSN BAPSA6
- Country of Publication:
- United States
- Language:
- English
Similar Records
High precision measurement of the muonium ground state hyperfine interval and the muon magnetic moment
Resonance line narrowing in a precision muonium experiment