The DOI matches its Crossref record; 24 of the 24 references it cites were found in a registry or an index.
Measurement of the Hydrogen1S-2STransition Frequency by Phase Coherent Comparison with a Microwave Cesium Fountain Clock
Abstract
We report on an absolute frequency measurement of the hydrogen 1S-2S two-photon transition in a cold atomic beam with an accuracy of 1.8 parts in 10(14). Our experimental result of 2 466 061 413 187 103(46) Hz has been obtained by phase coherent comparison of the hydrogen transition frequency with an atomic cesium fountain clock. Both frequencies are linked with a comb of laser frequencies emitted by a mode locked laser.
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“i+1 i 2 2 n 2 2 , i d n d n E M d d d ω ω ω ω = − ∑ (2)”
Metadata
- Authors
- Niering, M., Holzwarth, R., Reichert, J., Pokasov, P., Udem, T., Weitz, M., Hänsch, T. W., Lemonde, P., Santarelli, G., Abgrall, M., Laurent, P., Salomon, C., & Clairon, A.
- Affiliations
- Max Planck Institute of Quantum Optics (DE)
- Observatoire de Paris (FR)
- Laboratoire Kastler Brossel (FR)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2000-06-12
- Volume
- 84
- Issue
- 24
- Pages
- 5496-5499
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2048929628
- Cited by
- 560
- References
- 24
- Citations by year
- 2026: 2 · 2025: 13 · 2024: 4 · 2023: 6 · 2022: 8 · 2021: 4 · 2020: 6 · 2019: 13 · 2018: 18 · 2017: 14 · 2016: 13 · 2015: 17 · 2014: 10 · 2013: 16 · 2012: 19
- FWCI
- 27.42
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Advanced Frequency and Time Standards
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Atomic and Molecular Physics
- Physical Sciences › Physics and Astronomy › Instrumentation › Scientific Measurement and Uncertainty Evaluation
- Keywords
- absolute frequency measurement, cesium fountain clock, cold atomic beam
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