用国际原子时在NTSC测量87Sr光学晶格钟的绝对频率

IF 2.1 3区工程技术 Q2 INSTRUMENTS & INSTRUMENTATION

Metrologia Pub Date : 2022-11-08 DOI:10.1088/1681-7575/acb05c

Xiaotong Lu, F. Guo, Yebing Wang, Qinfang Xu, Chi-hua Zhou, Jingjing Xia, Wenjun Wu, Hong Chang

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引用次数: 5

摘要

本文报道了国家报时中心87Sr光晶格钟(Sr1)中5s21S0→555p3p0跃迁的绝对频率测量。其系统频移被仔细评估，总相对不确定度为5.1×10−17。测量的绝对频率为429 228 004 229 872.91(18)Hz，相对不确定度为4.1×10−16，参考了BIPM通过全球卫星导航系统链路在通告T中发布的主次频率标准集。

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Absolute frequency measurement of the 87Sr optical lattice clock at NTSC using international atomic time

We report the absolute frequency measurement of the 5s21S0→5s5p3P0 transition in 87Sr optical lattice clock (Sr1) at National Time Service Center. Its systematic frequency shifts are evaluated carefully with a total relative uncertainty of 5.1×10−17 . The measured absolute frequency is 429 228 004 229 872.91(18) Hz with a relative uncertainty of 4.1×10−16 , with reference to the ensemble of primary and secondary frequency standards published in the Circular T bulletin by BIPM through a global navigation satellite system link.

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来源期刊

Metrologia 工程技术-物理：应用

CiteScore

2.80

自引率

25.00%

发文量

137

审稿时长

12 months

期刊介绍： Published 6 times per year, Metrologia covers the fundamentals of measurements, particularly those dealing with the seven base units of the International System of Units (metre, kilogram, second, ampere, kelvin, candela, mole) or proposals to replace them. The journal also publishes papers that contribute to the solution of difficult measurement problems and improve the accuracy of derived units and constants that are of fundamental importance to physics. In addition to regular papers, the journal publishes review articles, issues devoted to single topics of timely interest and occasional conference proceedings. Letters to the Editor and Short Communications (generally three pages or less) are also considered.