Title :
High-precision measurement of the 87Rb ground-state hyperfine splitting in an atomic fountain
Author :
Ovchinnikov, Yu.B. ; Marra, Giuseppe ; Szymaniec, Krzysztof ; Chalupczak, W. ; Lebedev, V.
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
The results on accurate measurement of the absolute frequency of the 87Rb hyperfine ground-state transition in the NPL Rb fountain frequency standard is presented.To decrease the density-dependent shifts by an order of magnitude, it is proposed to operate the fountain in the velocity-chirped quasi-continuous regime, which combines the ideas of the juggling and the quasi- continuous fountains.
Keywords :
ground states; hyperfine interactions; Rb; atomic fountain; density-dependent shifts; ground-state hyperfine splitting; quasi- continuous fountains; velocity-chirped quasi-continuous regime; Astronomy; Atomic measurements; Clocks; Educational institutions; Extraterrestrial measurements; Frequency measurement; Laboratories; Optical wavelength conversion; Physics; Stability;
Conference_Titel :
Lasers and Electro-Optics 2009 and the European Quantum Electronics Conference. CLEO Europe - EQEC 2009. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-4079-5
Electronic_ISBN :
978-1-4244-4080-1
DOI :
10.1109/CLEOE-EQEC.2009.5192121
