Measurement of the 2S Hyperfine Interval in Atomic Hydrogen
Journal Article
·
· Physical Review Letters
- Max-Planck-Institut fuer Quantenoptik, 85748 Garching (Germany)
An optical measurement of the 2S hyperfine interval in atomic hydrogen using two-photon spectroscopy of the 1S-2S transition gives a value of 177 556 834.3(6.7) Hz. The uncertainty is 2.4 times smaller than achieved by our group in 2003 and more than 4 times smaller than for any independent radio-frequency measurement. The specific combination of the 2S and 1S hyperfine intervals predicted by QED theory 8f{sub HFS}(2S)-f{sub HFS}(1S)=48 953(3) Hz is in good agreement with the value of 48 923(54) Hz obtained from this experiment.
- OSTI ID:
- 21322821
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 21 Vol. 102; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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