Blackbody-radiation shift in a {sup 43}Ca{sup +} ion optical frequency standard
Journal Article
·
· Physical Review. A
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716-2593 (United States)
Motivated by the prospect of an optical frequency standard based on {sup 43}Ca{sup +}, we calculate the blackbody-radiation (BBR) shift of the 4s{sub 1/2}-3d{sub 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{sub 5/2} level is also calculated and its uncertainty is evaluated as well. Our results are compared with other calculations.
- OSTI ID:
- 21140720
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 76; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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