g Factor of Boronlike Argon Ar 40 13 + </…
2019; American Physical Society; Volume: 122; Issue: 25 Linguagem: Inglês
10.1103/physrevlett.122.253001
ISSN1092-0145
AutoresIoanna Arapoglou, Alexander Egl, Martin Höcker, Tim Sailer, B. Tu, Andreas Weigel, R. Wolf, H. Cakir, V. A. Yerokhin, Natalia S. Oreshkina, V. A. Agababaev, A. V. Volotka, D. V. Zinenko, D. A. Glazov, Z. Harman, Christoph H. Keitel, S. Sturm, K. Blaum,
Tópico(s)Cold Atom Physics and Bose-Einstein Condensates
ResumoWe have measured the ground-state $g$ factor of boronlike argon ${^{40}\mathrm{Ar}}^{13+}$ with a fractional uncertainty of $1.4\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}9}$ with a single ion in the newly developed Alphatrap double Penning-trap setup. The value of $g=0.663\text{ }648\text{ }455\text{ }32(93)$ obtained here is in agreement with our theoretical prediction of 0.663 648 12(58). The latter is obtained accounting for quantum electrodynamics, electron correlation, and nuclear effects within the state-of-the-art theoretical methods. Our experimental result distinguishes between existing predictions that are in disagreement, and lays the foundations for an independent determination of the fine-structure constant.
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