Measurement of the blackbody radiation shift of the 133Cs hyperfine transition in an atomic fountain -: art. no. 033412

被引：27

作者：

Levi, F ^{[1
]}

Calonico, D ^{[1
]}

Lorini, L ^{[1
]}

Micalizio, S ^{[1
]}

Godone, A ^{[1
]}

机构：

[1] Ist Elettrotecnico Nazl Galileo Ferraris, I-10135 Turin, Italy

来源：

PHYSICAL REVIEW A | 2004年 / 70卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.70.033412

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We used a Cs fountain to measure the Stark shift of the ground-state hyperfine transition frequency in cesium (9.2 GHz) due to the electric field of the blackbody radiation. The relative shift at 300 K deduced from our measurements, including the leading and the second-order term in temperature, is (-1.45+/-0.09)x10(-14) and agrees with our recent theoretical evaluation (-1.51+/-0.07)x10(-14) [Micalizio Phys. Rev. A 69, 053401 (2004)]. These values differ from that currently used (-1.735+/-0.003)x10(-14), with significant implications on frequency standards accuracy, on clocks comparison and on a variety of high-precision physics tests, such as the time stability of fundamental constants.

引用

页码：033412 / 1

页数：5

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