Absolute frequency measurement of the 2S-8S/D transitions in hydrogen and deuterium: New determination of the rydberg constant

B. De Beauvoir; F. Nez; L. Julien; B. Cagnac; F. Biraben; D. Touahri; L. Hilico; O. Acef; A. Clairon; J. J. Zondy

doi:10.1103/PhysRevLett.78.440

Absolute frequency measurement of the 2S-8S/D transitions in hydrogen and deuterium: New determination of the rydberg constant

B. De Beauvoir, F. Nez, L. Julien, B. Cagnac, F. Biraben, D. Touahri, L. Hilico, O. Acef, A. Clairon, J. J. Zondy

Department of Physics

Research output: Contribution to journal › Article

161 Citations (Scopus)

Abstract

We have performed a pure optical frequency measurement of the 2S-8S/D two-photon transitions in atomic hydrogen and deuterium. These frequencies are directly compared to a new frequency standard, a diode laser stabilized to a two-photon transition at 778 nm in rubidium. We deduce a new value for the Rydberg constant, R_∞ = 109 737.315 685 9(10) cm⁻¹ with an uncertainty of 9×10⁻¹². From the isotope shift, we derive a precise value of the 2S Lamb shift in deuterium [L_2S-2P = 1059.230(9) MHz] and the difference of the quadratic charge radii of deuteron and proton.

Original language	English
Pages (from-to)	440-443
Number of pages	4
Journal	Physical Review Letters
Volume	78
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.78.440
Publication status	Published - Jan 20 1997

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ASJC Scopus subject areas

Physics and Astronomy(all)

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De Beauvoir, B., Nez, F., Julien, L., Cagnac, B., Biraben, F., Touahri, D., Hilico, L., Acef, O., Clairon, A., & Zondy, J. J. (1997). Absolute frequency measurement of the 2S-8S/D transitions in hydrogen and deuterium: New determination of the rydberg constant. Physical Review Letters, 78(3), 440-443. https://doi.org/10.1103/PhysRevLett.78.440

Absolute frequency measurement of the 2S-8S/D transitions in hydrogen and deuterium : New determination of the rydberg constant. / De Beauvoir, B.; Nez, F.; Julien, L.; Cagnac, B.; Biraben, F.; Touahri, D.; Hilico, L.; Acef, O.; Clairon, A.; Zondy, J. J.

In: Physical Review Letters, Vol. 78, No. 3, 20.01.1997, p. 440-443.

Research output: Contribution to journal › Article

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AU - Touahri, D.

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10.1103/PhysRevLett.78.440