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BNM-SYRTE fountains: Recent results

By: Marion, H.; Bize, S.; Salomon, C.; Luiten, A.; Tobar, M.; Clairon, A.; Laurent, P.; Santarelli, G.; Dos Santos, F.P.; Rosenbusch, P.; Grunert, J.; Vian, C.; Cacciapuotti, L.; Maksimovic, I.; Abgrall, M.; Narbonneau, F.; Chambon, D.;

2004 / IEEE / 0-7803-8493-8

Description

This item was taken from the IEEE Conference ' BNM-SYRTE fountains: Recent results ' This paper describes several recent improvements of the BNM-SYRTE fountain ensemble. A new method for controlling the cold collision shift with improved accuracy has been proposed and demonstrated. A thorough investigation of some cold collision properties of 133Cs is presented, including the observation of molecular Feshbach resonances. Finally, a new microwave synthesis scheme based on a fully operational cryogenic oscillator is presented. With this, a fractional frequency instability below 2 × 10¿14 ¿¿¿ is obtained routinely.