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

Research output: Contribution to journal › Article

163 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
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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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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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 [L2S-2P = 1059.230(9) MHz] and the difference of the quadratic charge radii of deuteron and proton.",

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AU - Julien, L.

AU - Cagnac, B.

AU - Biraben, F.

AU - Touahri, D.

AU - Hilico, L.

AU - Acef, O.

AU - Clairon, A.

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