Measurement of the Blackbody Radiation Shift of the 133Cs Hyperfine Transition in an Atomic Fountain

Abstract

We used a Cs atomic fountain frequency standard to measure the Stark shift on the ground state hyperfine transiton frequency in cesium (9.2 GHz) due to the electric field generated by the blackbody radiation. The measures relative shift at 300 K is -1.43(11)e-14 and agrees with our theoretical evaluation -1.49(07)e-14. This value differs from the currently accepted one -1.69(04)e-14. The difference has a significant implication on the accuracy of frequency standards, in clocks comparison, and in a variety of high precision physics tests such as the time stability of fundamental constants.

arXiv comment4 pages, 2 figures, 2 tables

References in corpus (5)

• The String Dilaton and a Least Coupling Principle
• Runaway dilaton and equivalence principle violations
• A Search for Variations of Fundamental Constants using Atomic Fountain Clocks
• Testing the stability of fundamental constants with the 199Hg+ single-ion optical clock
• Black Body Radiation Shift of the 133Cs Hyperfine Transition Frequency

Cited by in corpus (8)

• Progress in Atomic Fountains at LNE-SYRTE
• Multipolar theory of black-body radiation shift of atomic energy levels and its implications for optical lattice clocks
• 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
• Tune-out wavelengths of the hyperfine components of the ground level of ${}^{133}$Cs atoms
• Investigation of ac-Stark shifts in excited states of dysprosium relevant to testing fundamental symmetries
• High-precision Electric Dipole Polarizabilities of the Clock States in ${}^{133}$Cs