Title :
Recent Results of NICT Caesium Atomic Fountains
Author :
Kumagai, Motohiro ; Ito, Hiroyuki ; Kajita, Masatoshi ; Hosokawa, Mizuhiko
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Tokyo
fDate :
May 29 2007-June 1 2007
Abstract :
National institute of information and communications technology (NICT) has developed Cs atomic fountain frequency standards aiming at contributing to improve the accuracy of International Atomic Time (TAI) and Japan Standard Time. They are called NICT-CsF1 and NICT-CsF2. The accuracy evaluation of CsF1 has been completed and a type B uncertainty of 1.9times10-15 has been achieved. NICT-CsF2 is under development.
Keywords :
atomic clocks; caesium; frequency standards; International Atomic Time; Japan Standard Time; NICT caesium atomic fountains; frequency standards; Atomic beams; Cooling; Fiber lasers; Frequency; Laser beams; Laser stability; Masers; Power lasers; Pump lasers; Standards development;
Conference_Titel :
Frequency Control Symposium, 2007 Joint with the 21st European Frequency and Time Forum. IEEE International
Conference_Location :
Geneva
Print_ISBN :
978-1-4244-0646-3
Electronic_ISBN :
1075-6787
DOI :
10.1109/FREQ.2007.4319143
