학술논문
BNM-SYRTE fountains: Recent results
Document Type
Conference
Author
Source
2004 Conference on Precision Electromagnetic Measurements Precision Electromagnetic Measurements Digest, 2004 Conference on. :494-495 Jun, 2004
Subject
Language
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 × 10 -14 τ ½ is obtained routinely.