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Parthey CG, Matveev A, Alnis J, et al. Precision measurement of the hydrogen-deuterium 1S-2S isotope shift. Phys Rev Lett. 2010;104(23):233001doi: 10.1103/PhysRevLett.104.233001.
Parthey, C. G., Matveev, A., Alnis, J., Pohl, R., Udem, T., Jentschura, U. D., Kolachevsky, N., & Hänsch, T. W. (2010). Precision measurement of the hydrogen-deuterium 1S-2S isotope shift. Physical review letters, 104(23), 233001. https://doi.org/10.1103/PhysRevLett.104.233001
Parthey, Christian G, et al. "Precision measurement of the hydrogen-deuterium 1S-2S isotope shift." Physical review letters vol. 104,23 (2010): 233001. doi: https://doi.org/10.1103/PhysRevLett.104.233001
Parthey CG, Matveev A, Alnis J, Pohl R, Udem T, Jentschura UD, Kolachevsky N, Hänsch TW. Precision measurement of the hydrogen-deuterium 1S-2S isotope shift. Phys Rev Lett. 2010 Jun 11;104(23):233001. doi: 10.1103/PhysRevLett.104.233001. Epub 2010 Jun 07. PMID: 20867231.
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Phys Rev Lett. 2010 Jun 11;104(23):233001. doi: 10.1103/PhysRevLett.104.233001. Epub 2010 Jun 07.

Precision measurement of the hydrogen-deuterium 1S-2S isotope shift.

Physical review letters

Christian G Parthey, Arthur Matveev, Janis Alnis, Randolf Pohl, Thomas Udem, Ulrich D Jentschura, Nikolai Kolachevsky, Theodor W Hänsch

Affiliations

  1. Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany.

PMID: 20867231 DOI: 10.1103/PhysRevLett.104.233001

Abstract

Measuring the hydrogen-deuterium isotope shift via two-photon spectroscopy of the 1S-2S transition, we obtain 670,994,334,606(15) Hz. This is a 10-times improvement over the previous best measurement [A. Huber, Phys. Rev. Lett. 80, 468 (1998)] confirming its frequency value. A calculation of the difference of the mean square charge radii of deuterium and hydrogen results in d - p =3.82007(65)  fm2, a more than twofold improvement compared to the former value.

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