波谱学杂志2024，Vol.41Issue(4)：469-475,7.DOI:10.11938/cjmr20243093
铷钟原子气室氦气渗透率实验研究
Study on Helium Permeation in Rubidium Clock's Vapor Cell
摘要
Abstract
Vapor cell's helium permeation is considered to be one of the reasons for the frequency drift of rubidium(Rb)clocks.In this study,we measured the helium permeability for both commonly used Pyrex Rb cell and newly developed anti-helium aluminosilicate Rb cell.Their helium permeabilities at operating temperatures(～60℃)are 2E-19 m2/(Pa.s)and≤3E-22 m2/(Pa.s),respectively.The analysis shows that the Pyrex Rb cells causes clock drift from helium permeation to be about E-13/day in the first four years and E-14/day in the next six years,and the aluminosilicate Rb cell can suppress the drift from helium permeation to E-16/day.The results are instructive for improving Rb clock's long-term frequency drift performance.关键词
铷原子钟/原子气室/氦气渗透/原子钟频率漂移Key words
rubidium atomic clock/atomic vapor cells/helium permeation/atomic clock frequency drift分类
数理科学引用本文复制引用
左玉龙,赵峰,梅刚华,李豆,徐俊秋,祝伟航,王鹏飞,明刚,王芳,王晨,康松柏..铷钟原子气室氦气渗透率实验研究[J].波谱学杂志,2024,41(4):469-475,7.基金项目
国家自然科学基金面上项目(12173064) （12173064）
国家自然科学基金青年项目(12103074). （12103074）
