Citation
Dm. Meekhof et al., Accuracy evaluation of a cesium fountain primary frequency standard at NIST, IEEE INSTR, 50(2), 2001, pp. 507-509
Citations number
14
Categorie Soggetti
Instrumentation & Measurement
Journal title
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
ISSN journal
00189456
→ ACNP
Volume
50
Issue
2
Year of publication
2001
Pages
507 - 509
Database
ISI
SICI code
0018-9456(200104)50:2<507:AEOACF>2.0.ZU;2-1
Abstract
A new laser-cooled Cs fountain primary frequency standard has been construc
ted at the National Institute of Standards and Technology (NIST) in Boulder
, CO. The new standard, NIST-F1, is described here, including details of sy
stematic 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 x 10(-
15) and Type B (systematic) uncertainties less than 0.9 x 10(-15).