Absolute wavelength measurement and fine-structure determination in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mspace></mspace><mi mathvariant="normal">i</mi><mi mathvariant="normal">i</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>7</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span>

E. Riis; H. G. Berry; O. Poulsen; S. A. Lee; S. Y. Tang

doi:10.1103/PhysRevA.33.3023

Absolute wavelength measurement and fine-structure determination in ${}^{7}{i i}$

E. Riis, H. G. Berry, O. Poulsen, S. A. Lee, and S. Y. Tang

Phys. Rev. A 33, 3023 – Published 1 May 1986

Abstract

We have used collinear fast-beam–laser fluorescence spectroscopy to obtain precise measurements of the fine structures and absolute wavelengths of the 1s2s $^{3}$ S–1s2p $^{3}$ P transitions in ${}^{7}{i i}$ . Our results are about 50 times more accurate than the best nonrelativistic calculations for these energy differences, and they have a precision equivalent to 150 ppm of the QED corrections for the 2s-2p transitions.

Received 4 February 1986

DOI:https://doi.org/10.1103/PhysRevA.33.3023

Authors & Affiliations

E. Riis, H. G. Berry, and O. Poulsen

Institute of Physics, University of Aarhus, DK-8000 Aarhus, Denmark

S. A. Lee and S. Y. Tang

Department of Physics, Colorado State University, Fort Collins, Colorado 80523

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Vol. 33, Iss. 5 — May 1986

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