NIM4#铯冷原子喷泉钟新一代时间频率基准  

NIM4# Cold Cesium Atomic Fountain Clock a Time and Frequency Primary Standard of New Generation

作　　者：李天初[1] 李明寿[1] 林平卫[1] 黄秉英[1] 钱进[1] 王平[1] 干云清[1] 辛明德[1] 陈伟亮[1] 石春英[1] 赵晓惠[1] 刘年丰[1] 

机构地区：[1]中国计量科学研究院,北京100013

出　　处：《宇航计测技术》2004年第1期20-25,共6页Journal of Astronautic Metrology and Measurement

摘　　要：回顾了NIM4 #钟实现 5 μK冷原子云 ,74cm原子喷泉和 0 95Hz线宽Ramsey跃迁实验 ,报道了 9 19GHz微波锁定到铯原子秒定义跃迁 ,频率稳定性达到 (5 - 7)× 10 -15(15 0 0 0s)。目前我们正在进行不确定度评估 ,可望不确定度进入 10 -15量级 ,建立我国新一代时间频率基准装置。We in this paper review realizations of the 5μK cold atom cloud, 74cm atomic fountain, and Ramsey transition with 0.95Hz linewidth; and report the locking of th 9.19GHz microwave to the time unit, second, definition transition of the Cesium atom with a stability of (5-7)×10 -15 (15000s) on the NIM4# cold atomic fountain clock. Now we are evaluating the uncertainties with the target to establish the new generation time and frequency primary standard, with uncertainty in the order of 10 -15 , of this nation.

关 键 词：NIM4# 铯冷原子喷泉钟 时间频率基准 频率稳定性 实验 

分 类 号：TM935.11[电气工程—电力电子与电力传动]