Accuracy evaluation of a cesium fountain primary frequency standard at NIST

Author

Meekhof, D.M. ; Jefferts, S.R. ; Stepanovíc, M. ; Parker, T.E.

Author_Institution

Nat. Inst. of Stand. & Technol., Boulder, CO, USA

Volume

50

Issue

2

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

507

Lastpage

509

Abstract

A new laser-cooled Cs fountain primary frequency standard has been constructed at the National Institute of Standards and Technology (NIST) in Boulder, CO. The new standard, NIST-F1, is described here, including details of systematic frequency biases for which frequency corrections are made. We have submitted two evaluations to the Bureau International des Poids et Mesures (BIPM), which have Type A (statistical) uncertainties less than 1.5×10^-15 and Type B (systematic) uncertainties less than 0.9×10^-15

Keywords

caesium; frequency standards; measurement uncertainty; probability; spectral line shift; statistical analysis; BIPM; Bureau International des Poids et Mesures; Cs; Cs fountain; NIST; National Institute of Standards and Technology; frequency corrections; measurement uncertainties; primary frequency standard; statistical uncertainties; systematic uncertainties; Atom lasers; Atomic beams; Atomic measurements; Frequency conversion; Laser beams; Laser transitions; Masers; NIST; Saturation magnetization; Uncertainty;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.918178

Filename

918178