Düsseldorf 2007 – scientific programme
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A: Fachverband Atomphysik
A 10: Poster I - Precisions Spectroscopy
A 10.6: Poster
Tuesday, March 20, 2007, 16:30–18:30, Poster B
Correlation and QED effects on the lifetime, relativistic nuclear recoil and electronic g factor in Ar13+ and Ar14+ ions — •Z. Harman1, R. Soria Orts1, A. Lapierre1, J. R. Crespo López-Urrutia1, U. D. Jentschura1, A. N. Artemyev1,2, C. H. Keitel1, V. M. Shabaev2, H. Tawara1, I. I. Tupitsyn1,2, J. Ullrich1, and A. V. Volotka2 — 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg — 2St. Petersburg State University, Oulianovskaya 1, 198504 St. Petersburg, Russia
The radiative lifetime [1] and isotope shift [2] of the 1s2 2s2 2p 2P3/2 − 2P1/2 M1 transition and the g factor of these levels [3] in B-like argon ions has been determined with high accuracy using the Heidelberg electron beam ion trap. The lifetime corresponding to the above transition has been measured with an accuracy on the order of one per mil. Theoretical calculations predict a lifetime that is significantly lower than this high-precision experimental value. Our mass shift calculations are in excellent agreement with the experimental results and confirm the necessity to include relativistic recoil corrections when evaluating mass isotope shift contributions in medium-Z ions. The g factor of the P states is determined with a 1.5 per mil accuracy by resolving the Zeeman components of the transition. The experimental results are in accordance with our theoretical calculations.
[1] A. Lapierre et al., Phys. Rev. Lett. 95, 183001 (2005).
[2] R. Soria Orts et al., Phys. Rev. Lett. 97, 103002 (2006).
[3] R. Soria Orts et al., to be published