Title :
Preliminary evaluation of the Cs atomic fountain frequency standard at NMIJ/AIST
Author :
Kurosu, Takayuki ; Fukuyama, Yasuhiro ; Koga, Yasuki ; Abe, Kentaro
Author_Institution :
Nat. Metrol. Inst. of Japan, Agency of Ind. Sci. & Technol., Tsukuba, Japan
fDate :
4/1/2004 12:00:00 AM
Abstract :
With the aim of contributing to the calibration of the International Atomic Time Scale (TAI), a cesium atomic fountain frequency standard is developed at the National Metrology Institute of Japan. The short-term stability is measured to be σ(τ)=4.7×10-13×τ-12/ by comparison with a hydrogen maser. Preliminary results of the accuracy evaluation, including measurement of the second-order Zeeman shift, are presented.
Keywords :
atomic clocks; AIST; Cs atomic fountain frequency standard; International Atomic Time Scale; Japan; NMIJ; National Metrology Institute; TAI; atomic clocks; calibration; cesium; frequency stability; hydrogen maser; second-order Zeeman shift; short-term stability; standards; Atom optics; Atomic beams; Atomic measurements; Calibration; Frequency; Magnetic shielding; Masers; Metrology; Stability; Standards development;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2004.823313
