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APS » Journals » Phys. Rev. Lett. » Volume 69 » Issue 16
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Phys. Rev. Lett. 69, 2326–2329 (1992)

Precise frequency measurement of the 2S-8S/8D transtions in atomic hydrogen: New determination of the Rydberg constant

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F. Nez, M. D. Plimmer, S. Bourzeix, L. Julien, and F. Biraben
Laboratoire de Spectroscopie Hertzienne de l’Ecole Normale Supérieure, Université Pierre et Marie Curie, Tour 12 E01, 4 place Jussieu, 75252 Paris CEDEX 05, France

R. Felder
Bureau International des Poids et Mesures, Pavillon de Breteuil, 92312 Sèvres CEDEX, France

O. Acef, J. J. Zondy, P. Laurent, A. Clairon, and M. Abed
Laboratoire Primaire des Temps et Fréquences, Bureau National de Métrologie-Observatoire de Paris, 61 avenue de l’Observatoire, 75014 Paris, France

Y. Millerioux and P. Juncar
Institut National de Métrologie-BNM, 292 rue St. Martin, 75141 Paris CEDEX 03, France

Received 5 August 1992; published in the issue dated 19 October 1992

We have measured the Rydberg constant by frequency comparison of the three transitions 2S1/2-8S1/2, 2S1/2-8D3/2, and 2S1/2-8D5/2 in hydrogen with the difference of two optical standards, the methane-stabilized He-Ne laser and the iodine-stabilized He-Ne laser. The frequency of the iodine-stabilized He-Ne laser has been remeasured. The new value for the Rydberg constant, R∞=109 737.315 683 0(31) cm-1, is currently the most precise available.

© 1992 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.69.2326
DOI:
10.1103/PhysRevLett.69.2326
PACS:
06.20.Jr, 06.20.Hq, 31.30.Jv
 
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