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physics.atom-ph2005★ 240 cited
Cold atom Clocks and Applications
S. Bize, P. Laurent, M. Abgrall +14
This paper describes advances in microwave frequency standards using laser-cooled atoms at BNM-SYRTE. First, recent improvements of the Cs and Rb atomic fountains ar…
physics.atom-ph2003★ 100 cited
Precision Spectroscopy of Atomic Hydrogen and Variations of Fundamental Constants
M. Fischer, N. Kolachevsky, M. Zimmermann +14
In 2003 we have measured the absolute frequency of the two-photon transition in atomic hydrogen. We observed a variati…
physics.atom-ph2002★ 298 cited
A Search for Variations of Fundamental Constants using Atomic Fountain Clocks
H. Marion, F. Pereira Dos Santos, M. Abgrall +12
Over five years we have compared the hyperfine frequencies of 133Cs and 87Rb atoms in their electronic ground state using several laser cooled 133Cs and 87Rb atomic fountains with…