DocumentCode :
2089581
Title :
Evaluation of NPL CSF1 frequency standard
Author :
Szymaniec, K. ; Chalupczak, W. ; Henderson, D.
Author_Institution :
Nat. Phys. Lab., Teddington
fYear :
2004
fDate :
5-7 April 2004
Firstpage :
34
Lastpage :
41
Abstract :
In this contribution a new caesium fountain frequency standard at the national physical laboratory (NPL-CsFl) is described. Procedures for evaluation of the systematic frequency shifts are presented. The NPL-CsFl has a short- term stability of 1.4 times 10-13 tau -1/2 predominantly due to the local oscillator phase noise. The accuracy, of 1 part in 1015 is limited by the uncertainty of the frequency shift due to collisions between cold atoms.
Keywords :
caesium; frequency stability; frequency standards; laser cooling; phase noise; Cs; caesium fountain; cold atoms; frequency shifts; frequency standard; laser cooling; local oscillator phase noise; short-term stability; atomic frequency standard; caesium fountain; laser cooling;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Frequency and Time Forum, 2004. EFTF 2004. 18th European
Conference_Location :
Guildford
ISSN :
0537-9989
Print_ISBN :
0-86341-384-6
Type :
conf
Filename :
5074902
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2089581
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