Abstract
We give a pedagogical description of the method to extract the charge radii and Rydberg constant from laser spectroscopy in regular hydrogen (H) and deuterium (D) atoms, that is part of the CODATA least-squares adjustment (LSA) of the fundamental physical constants. We give a deuteron charge radius rd from D spectroscopy alone of 2.1415(45) fm. This value is independent of the measurements that lead to the proton charge radius, and five times more accurate than the value found in the CODATA Adjustment 10. The improvement is due to the use of a value for the 1S→2S transition in atomic deuterium which can be inferred from published data or found in a PhD thesis.
Original language | English |
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Pages (from-to) | L1-L10 |
Journal | Metrologia |
Volume | 54 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2 Mar 2017 |
Funding
R P acknowledges support from the European Research Council trough ERC StG. 279765, A A from the SNF, Projects 200020-159755 and 200021-165854, and T W H from the Max Planck Society and the Max Planck Foundation. H F thanks the LABEX Cluster of Excellence FIRST-TF (ANR-10-LABX-48-01), within the Program Investissements d'Avenir operated by the French National Research Agency (ANR) for financial support.
Funders | Funder number |
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LABEX Cluster of Excellence FIRST-TF | ANR-10-LABX-48-01 |
Seventh Framework Programme | 279765 |
European Research Council | |
Agence Nationale de la Recherche | |
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung | 200021-165854, 200020-159755 |
Max-Planck-Gesellschaft | |
Max Planck Institute for Nuclear Physics |
Keywords
- deuteron radius
- proton radius
- Rydberg constant