Author :
Marion, H. ; Dos Santos, F. Pereira ; Chambon, D. ; Narbonneau, F. ; Abgrall, M. ; Maksimovic, I. ; Cacciapuotti, L. ; Vian, C. ; Grunert, J. ; Rosenbusch, P. ; Bize, S. ; Santarelli, G. ; Laurent, Ph ; Clairon, A. ; Tobar, M. ; Luiten, A. ; Salomon, C.
Abstract :
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 times 10-14tau-frac12 is obtained routinely
Keywords :
atomic collisions; molecular collisions; resonant states; BNM-SYRTE fountains; cold collision properties; cold collision shift control; microwave synthesis; molecular Feshbach resonances; operational cryogenic oscillator; Atomic beams; Australia; Clouds; Cryogenics; Frequency synthesizers; Microwave frequencies; Microwave oscillators; Physics; Pulse modulation; Resonance;
