流动VLBI站氢原子钟的研制与性能测试  

A STUDY AND PERFORMANCE EVALUATION OF HYDROGEN MASER USED IN MOBILE VLBI STATIONS

作　　者：张为群[1] 林传富[1] 于双林[1] 张一平[1] 王关忠[1] 张健[1] 杨佩红[1] 

机构地区：[1]中国科学院上海天文台,上海200030

出　　处：《天文学报》2001年第1期94-100,共7页Acta Astronomica Sinica

摘　　要：氢脉泽是射电天文所必需的频率标准 .文中对为流动VLBI站研制的新一代氢脉泽的物理结构特点进行了讨论 ,包括对腔泡结构、磁屏蔽、原子束光学系统等 .同时性能测试表明在 80秒到 1天之间频率稳定度优于 1× 1 0 - 1 4 .The H maser is an essential frequency reference standard for radio astronomy. This paper provides information about the design and specifications of a new generation of the H maser for the Chinese mobile VLBI stations, including the improvement of the cavity bulb, magnetic shields and atomic beam optics. The performance measurements show that the frequency stability is a little better than 1*E 14 for time interval from 80 s to 1 day.

关 键 词：氢脉泽 频率稳定度 基长基线干涉测量仪 腔泡结构 氢原子钟 磁屏蔽 

分 类 号：TH714.14[机械工程—测试计量技术及仪器]