摘要
冷原子粘团的制备是喷泉钟研制的关键步骤之一。通过慢速原子束加载获得冷原子粘团,应用荧光收集法测量了冷原子粘团的原子数目,采用飞行时间法测量了冷原子粘团温度。冷原子粘团中原子数目在加载时间200 ms的情况下为(8.14±0.2)×107,温度为(10.72±0.69)μK。
Preparation of the optical molasses is one of the key steps for developing a fountain clock. The optical molasses is loaded from a slow atomic beam, and the fluorescence collection method is applied to determine the number of atoms in the optical molasses, meanwhile the time-of-flight（TOF） method is used to measure the temperature of the optical molasses. The number of cold atoms in the optical molasses for loading time of 200 ms is determined to be （8.14±0.2）×107, and the temperature of cold atoms is determined to be （10.72±0.69） μK.
出处
《时间频率学报》
CSCD
2012年第4期193-200,共8页
Journal of Time and Frequency
基金
中国科学院重大科技基础设施开放研究资助项目(29Y005DK0001)
国家杰出青年科学基金资助项目(1025023)
关键词
冷原子粘团
慢速原子束
冷原子数目
冷原子温度
optical molasses
slow atomic beam
number of cold atoms
temperature of cold atoms
