DocumentCode
3448832
Title
Evaluation of NPL CSF1 Primary Frequency Standard
Author
Szymaniec, K. ; Chalupczak, W. ; Henderson, D. ; Ovchinnikov, Y.
Author_Institution
National Phys. Lab., Teddington
fYear
2004
fDate
38139
Firstpage
496
Lastpage
497
Abstract
A full performance evaluation of the caesium fountain primary frequency standard at the NPL is reported. Improved magnetic shielding has resulted in the inhomogeneity of the C-field being below 1 nT. The measurement of the frequency bias due to cold collisions is described. A direct evaluation of the fountain´s frequency stability, in comparison to that of a hydrogen maser, is reported
Keywords
atomic collisions; frequency standards; magnetic shielding; masers; NPL CSF1; caesium fountain; cold collisions; frequency bias measurement; hydrogen maser; magnetic shielding; primary frequency standard; Atom optics; Atomic beams; Atomic measurements; Cooling; Frequency measurement; Hydrogen; Lattices; Masers; Phase noise; Stability;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location
London
Print_ISBN
0-7803-8494-6
Electronic_ISBN
0-7803-8494-6
Type
conf
DOI
10.1109/CPEM.2004.305329
Filename
4097340
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