Title :
NIM4 cesium fountain primary frequency standard: performance and evaluation
Author :
Li, Tianchu ; Li, Mingshou ; Lin, Pingwei ; Huang, Bingying ; Qian, Jin ; Gan, Yunqing ; Wang, Ping ; Xin, Mingde ; Chen, Weiliang ; Shi, Chunying ; Liu, Nianfeng ; Zhao, Xiaohui
Author_Institution :
Nat. Inst. of Metrol., Beijing, China
Abstract :
The NIM4 atomic fountain clock has been operating since August 2003. We in this paper report the experiments certifying its stability of 8E-13/τ12/, reproducibility of 5E-15, and present results of the first evaluation for its systematic frequency correction with an uncertainty of 8.5 E-15 during September to December 2003.
Keywords :
atomic clocks; caesium; frequency stability; frequency standards; laser cooling; NIM4 atomic fountain clock; caesium clock; performance; primary frequency standard; stability; systematic frequency correction; Atom optics; Atomic clocks; Atomic measurements; Cooling; Frequency estimation; Frequency synthesizers; Gallium nitride; Reproducibility of results; Stability; Uncertainty;
Conference_Titel :
Frequency Control Symposium and Exposition, 2004. Proceedings of the 2004 IEEE International
Print_ISBN :
0-7803-8414-8
DOI :
10.1109/FREQ.2004.1418549
