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2004•IEEE Transactions on Instrumentation and MeasurementRequires access

Preliminary Evaluation of the Cs Atomic Fountain Frequency Standard at NMIJ/AIST

Takayuki Kurosu, Yasuhiro Fukuyama, Y. Koga, Kaori Abe

Open publisher page 38 citations

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 /spl sigma/(/spl tau/)=4.7/spl times/10/sup -13//spl times//spl tau//sup -1/2/ by comparison with a hydrogen maser. Preliminary results of the accuracy evaluation, including measurement of the second-order Zeeman shift, are presented.

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What this paper is about

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 /spl sigma/(/spl tau/)=4.7/spl times/10/sup -13//spl times//spl tau//sup -1/2/ by comparison with a hydrogen maser. Preliminary results of the accuracy evaluation, including measurement of the second-order Zeeman shift, are presented.

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Available 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 /spl sigma/(/spl tau/)=4.7/spl times/10/sup -13//spl times//spl tau//sup -1/2/ by comparison with a hydrogen maser. Preliminary results of the accuracy evaluation, including measurement of the second-order Zeeman shift, are presented.

Key concepts: Hydrogen maser, Frequency standard, Metrology, Atomic clock, Zeeman effect, Fountain, Calibration, Maser

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