Title :
IEN Cs Fountain Primary Frequency Standard: Contribution to the International Atomic Time and Blackbody Shift Measurements
Author :
Calonico, D. ; Levi, F. ; Lorini, L. ; Godone, A.
Author_Institution :
Ist. Elettrotecnico Nazionale "G. Fenaris", Torino
Abstract :
Since last year, IEN Cs fountain (IEN-CsFI) has started to contribute to the atomic international time (TAI). During this period we have also provided the first direct measurements of the black-body radiation shift for Cs performed with a cold atoms standard. The results suggest a review of this bias evaluation in order to ensure a 10-15 accuracy level for fountains
Keywords :
blackbody radiation; caesium; frequency standards; IEN caesium fountain; atomic international time; black-body radiation shift; blackbody shift measurements; international atomic time; primary frequency standard; Atomic measurements; Clocks; Frequency measurement; Hydrogen; Masers; Measurement standards; Particle measurements; Performance evaluation; Temperature dependence; Time measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location :
London
Print_ISBN :
0-7803-8494-6
Electronic_ISBN :
0-7803-8494-6
DOI :
10.1109/CPEM.2004.305332
