13-17 October 2014
Das Wormser
Europe/Berlin timezone

Recoil effect to the g factor of boronlike ions

Not scheduled
20m
Mozartsaal (Das Wormser)

Mozartsaal

Das Wormser

Das Wormser, Rathenaustraße 11, 67547 Worms, ‎ Tel: 06241/2000420

Speaker

Mr Arseniy Shchepetnov (Department of Physics, St. Petersburg State University; Institute for Theoretical and Experimental Physics)

Description

g factor of highly-charged ions proved to be an excellent tool for the high-precision comparison between experiment and theory. Measurements of the bound-electron g factor in light highly charged ions during the last 15 years have reached an accuracy of ppb and better [1-4]. As a spectacular result of these investigations, the most accurate value of the electron mass was obtained [5]. Experiments with heavy ions, in particular, those planned at FAIR, will give an opportunity to test quantum electrodynamics in strong electric and magnetic fields. In addition, simultaneous study of g factors of heavy hydrogenlike and boronlike ions will allow for precise determination of the fine structure constant [6]. Currently, the g-factor measurements for boronlike argon are performed at GSI (ARTEMIS experiment) [7]. At present, the accuracy of the corresponding theoretical value is at the ppm level [8] and its improvement is in demand. We present the evaluation of the nuclear recoil effect to the g factor of boronlike ions in the ground P_1/2 state and in the first excited P_3/2 state in the medium-Z region. Recoil correction is calculated to first order in the electron-to-nucleus mass ratio, and to zeroth and first orders in 1/Z. The leading-order relativistic corrections are taken into account to zeroth order in 1/Z according to the formulae obtained in Ref. [9]. The first-order contribution in 1/Z is considered within the nonrelativistic theory. The results allow us to improve accuracy of the recoil correction to the g factor of boronlike ions for P_1/2 and P_3/2 states. The work was supported by the SAEC “Rosatom”, the Helmholtz Association, RFBR (grants 13-02-00630 and 14-02-31316), Saint-Petersburg State University (grants 11.0.15.2010 and 11.42.1225.2014), and DFG (grant VO 1707/1-2). References [1] H. Häffner et al., Phys. Rev. Lett. 85, 5308 (2000). [2] J. L. Verdú et al., Phys. Rev. Lett. 92, 093002 (2004). [3] S. Sturm et al., Phys. Rev. Lett. 107, 023002 (2011). [4] A. Wagner et al., Phys. Rev. Lett. 110, 033003 (2013). [5] S. Sturm et al., Nature 506, 467 (2014). [6] V. M. Shabaev et al., Phys. Rev. Lett. 96, 253002 (2006). [7] D. von Lindenfels et al., Phys. Rev. A 87, 023412 (2013). [8] D. A. Glazov et al., Phys. Scr. T156, 014014 (2013). [9] V. M. Shabaev, Phys. Rev. A 64, 052104 (2001).

Primary author

Mr Arseniy Shchepetnov (Department of Physics, St. Petersburg State University; Institute for Theoretical and Experimental Physics)

Co-authors

Dr Andrey Volotka (Institut fuer Theoretische Physik, Technische Universitaet Dresden; Department of Physics, St. Petersburg State University) Dr Dmitry Glazov (Department of Physics, St. Petersburg State University; Institute for Theoretical and Experimental Physics) Prof. Guenter Plunien (Institut fuer Theoretische Physik, Technische Universitaet Dresden) Prof. Ilya Tupitsyn (Department of Physics, St. Petersburg State University) Prof. Vladimir Shabaev (Department of Physics, St. Petersburg State University)

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