Black Body Radiation Shift of the 133Cs Hyperfine Transition Frequency

Abstract

We report the theoretical evaluations of the static scalar polarizability of the 133Cs ground state and of the black body radiation shift induced on the transition frequency between the two hyperfine levels with m_F = 0. This shift is of fundamental importance in the evaluation of the accuracy of the primary frequency standards based on atomic fountains and employed in the realization of the SI second in the International Atomic Time (TAI) scale at the level of 1e-15. Our computed value for the polarizability is alpha_0=6.600(16)e-39 Cm^2/V in agreement at the level of 1e-3 with recent theoretical and experimental values. As regards the black body radiation shift we .nd for the relative hyper.ne transition frequency beta=-1.49 (7)e-14 at T = 300 K in agreement with frequency measurements reported by our group and by Bauch and Schroder [Phys. Rev. Lett. 78, 622, (1997)]. This value is lower by 2e-15 than that obtained with measurements based on the dc Stark shift and than the value commonly accepted up to now.

18 pages, 2 figures, 6 tables

References in corpus (6)

• High-precision calculations of dispersion coefficients, static dipole polarizabilities, and atom-wall interaction constants for alkali-metal atoms
• Relativistic many-body calculations of energy levels, hyperfine constants, electric-dipole matrix elements and static polarizabilities for alkali-metal atoms
• High precision measurement of the static dipole polarizability of cesium
• Slowing and cooling molecules and neutral atoms by time-varying electric field gradients
• High-precision determination of transition amplitudes of principal transitions in Cs from van der Waals coefficient C_6
• Polarizabilities and parity non-conservation in the Cs atom and limits on the deviation from the standard electroweak model

Cited by in corpus (10)

• Progress in Atomic Fountains at LNE-SYRTE
• High-accuracy calculation of black-body radiation shift in ${}^{133}$Cs primary frequency standard
• Frequency shift of cesium clock transition due to blackbody radiation
• Frequency shift of hyperfine transitions due to blackbody radiation
• Attractive force on atoms due to blackbody radiation
• Measurement of the Blackbody Radiation Shift of the 133Cs Hyperfine Transition in an Atomic Fountain
• Theoretical Investigation of the Black-body Zeeman Shift for Microwave Atomic Clocks
• Tune-out wavelengths of the hyperfine components of the ground level of ${}^{133}$Cs atoms
• High-precision Electric Dipole Polarizabilities of the Clock States in ${}^{133}$Cs
• Blackbody Radiation Noise Broadening of Quantum Systems