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g Factor of Boronlike Argon Ar4013

We have measured the ground-state g factor of boronlike argon Ar4013+ with a fractional uncertainty of 1.4×10−9 with a single ion in the newly developed Alphatrap double Penning-trap setup. The value of g=0.663 648 455 32(93) obtained here is in agreement with our theoretical prediction of 0.663 648...

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Published in:Physical review letters 2019-06, Vol.122 (25), p.253001
Main Authors: Arapoglou, I, Egl, A, Höcker, M, Sailer, T, Tu, B, Weigel, A, Wolf, R, Cakir, H, Yerokhin, V A, Oreshkina, N S, Agababaev, V A, Volotka, A V, Zinenko, D V, Glazov, D A, Harman, Z, Keitel, C H, Sturm, S, Blaum, K
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container_issue 25
container_start_page 253001
container_title Physical review letters
container_volume 122
creator Arapoglou, I
Egl, A
Höcker, M
Sailer, T
Tu, B
Weigel, A
Wolf, R
Cakir, H
Yerokhin, V A
Oreshkina, N S
Agababaev, V A
Volotka, A V
Zinenko, D V
Glazov, D A
Harman, Z
Keitel, C H
Sturm, S
Blaum, K
description We have measured the ground-state g factor of boronlike argon Ar4013+ with a fractional uncertainty of 1.4×10−9 with a single ion in the newly developed Alphatrap double Penning-trap setup. The value of g=0.663 648 455 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.
doi_str_mv 10.1103/PhysRevLett.122.253001
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subjects Argon
Quantum electrodynamics
title g Factor of Boronlike Argon Ar4013
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