https://doi.org/10.1140/epjd/e2009-00098-4
Blackbody radiation shift of the Al+ clock transition
1
Faculty of Technology, Charles Darwin University, NT, 0909 Darwin, Australia
2
Department of Physics and Computational Science Research Center, San Diego State University, San Diego, CA, 92182, USA
Corresponding author: a jxm107@rsphysse.anu.edu.au
Received:
30
October
2008
Revised:
21
December
2008
Published online:
19
March
2009
The blackbody radiation shift of the Al+ 3s2 1Se0 ↦ 3s3p 3P○0 clock transition is evaluated. The polarizabilities of the two states are determined by means of configuration interaction calculations in conjunction with oscillator strength sum rules. The ground state polarizability was 24.14 ±0.12 a.u. while the metastable state polarizability was 24.62 ±0.25 a.u. The derived frequency shift at 300 K was Δν= -0.0042 ±0.0032 Hz. Some auxiliary sum rules are evaluated that allow for the conversion of a finite frequency polarizability difference to a static polarizability difference.
PACS: 31.15.ap – Polarizabilities and other atomic and molecular properties / 31.15.ag – Excitation energies and lifetimes; oscillator strengths / 31.15.V- – Electron correlation calculations for atoms, ions and molecules
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009
