时间频率学报
時間頻率學報
시간빈솔학보
JOURNAL OF TIME AND FREQUENCY
2012年
4期
193-200
,共8页
陈江%张辉%阮军%王心亮%刘丹丹%张首刚
陳江%張輝%阮軍%王心亮%劉丹丹%張首剛
진강%장휘%원군%왕심량%류단단%장수강
冷原子粘团%慢速原子束%冷原子数目%冷原子温度
冷原子粘糰%慢速原子束%冷原子數目%冷原子溫度
랭원자점단%만속원자속%랭원자수목%랭원자온도
optical molasses%slow atomic beam%number of cold atoms%temperature of cold atoms
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200ms的情况下为(8.14±0.2)×107,温度为(10.72±0.69)μK。
冷原子粘糰的製備是噴泉鐘研製的關鍵步驟之一。通過慢速原子束加載穫得冷原子粘糰,應用熒光收集法測量瞭冷原子粘糰的原子數目,採用飛行時間法測量瞭冷原子粘糰溫度。冷原子粘糰中原子數目在加載時間200ms的情況下為(8.14±0.2)×107,溫度為(10.72±0.69)μK。
랭원자점단적제비시분천종연제적관건보취지일。통과만속원자속가재획득랭원자점단,응용형광수집법측량료랭원자점단적원자수목,채용비행시간법측량료랭원자점단온도。랭원자점단중원자수목재가재시간200ms적정황하위(8.14±0.2)×107,온도위(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.