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arXiv · 0709.0149

Blackbody radiation shift in a 43Ca+ ion optical frequency standard

Bindiya Arora·M. S. Safronova·Charles W. Clark
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Abstract

Motivated by the prospect of an optical frequency standard based on 43Ca+, we calculate the blackbody radiation (BBR) shift of the 4s_1/2-3d_5/2 clock transition, which is a major component of the uncertainty budget. The calculations are based on the relativistic all-order single-double method where all single and double excitations of the Dirac-Fock wave function are included to all orders of perturbation theory. Additional calculations are conducted for the dominant contributions in order to evaluate some omitted high-order corrections and estimate the uncertainties of the final results. The BBR shift obtained for this transition is 0.38(1) Hz. The tensor polarizability of the 3d_5/2 level is also calculated and its uncertainty is evaluated as well. Our results are compared with other calculations.

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Bindiya Arora, M. S. Safronova, Charles W. Clark. 2007-09-03. Blackbody radiation shift in a 43Ca+ ion optical frequency standard. https://doi.org/10.1103/physreva.76.064501

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