BNM-SYRTE fountains: Recent results

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.

Author_Institution

BNM-SYRTE, UMR CNRS, Paris

fYear

2004

fDate

38139

Firstpage

494

Lastpage

495

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 2004 Conference on

Conference_Location

London

Print_ISBN

0-7803-8494-6

Electronic_ISBN

0-7803-8494-6

Type

conf

DOI

10.1109/CPEM.2004.305328

Filename

4097339