小型化氢脉泽原子储存时间设计  

Design of the Atomic Storage Time of a Miniaturized Hydrogen Maser

作　　者：何克亮[1,2] 张为群 林传富[1] HE Ke-liang;ZHANG Wei-qun;Lin Chuan-fu(Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海天文台,上海200030 [2]中国科学院大学,北京100049

出　　处：《波谱学杂志》2020年第2期200-208,共9页Chinese Journal of Magnetic Resonance

摘　　要：氢微波激射器(氢脉泽)采用原子储存泡对氢原子进行囚禁,在低损耗谐振腔内形成稳定的自持振荡.本文采用具备低腔频温度系数的介质加载谐振腔替换传统的腔-泡结构,实现了氢脉泽的小型化;并分析了这种小型化方案对频率稳定度和准确度的影响.原子储存时间设计值为0.4 s,闭环后的频率稳定度为5.6×10^-15/(1000 s),与储存时间设计结果相吻合.A hydrogen maser confines hydrogen atoms in the storage bulb and produces self-sustained oscillation in a low-loss resonance cavity.In this work,a miniaturized hydrogen maser was designed and fabricated utilizing a dielectric loaded cavity having a low frequency-temperature coefficient.The frequency stability and accuracy of the hydrogen maser were analyzed.The experimentally measured atomic storage time of the hydrogen maser was 0.4 s,and the frequency stability 5.6×10^-15/(1000 s),agreeing with the design.

关 键 词：氢脉泽 原子储存时间 弛豫时间 频率稳定度 

分 类 号：O455[理学—无线电物理] TM935.11[理学—物理]