铷钟原子气室氦气渗透率实验研究
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左玉龙, 李豆, 徐俊秋, 祝伟航, 王鹏飞, 明刚, 王芳, 王晨, 康松柏, 赵峰, 梅刚华
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Study on Helium Permeation in Rubidium Clock’s Vapor Cell
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ZUO Yulong, LI Dou, XU Junqiu, ZHU Weihang, WANG Pengfei, MING Gang, WANG Fang, WANG Chen, KANG Songbai, ZHAO Feng, MEI Ganghua
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表1 玻璃气室样品尺寸、氦气压强、频率漂移拟合结果及计算得到的氦气渗透率
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Table 1 The size of the glass cell, helium pressure, frequency drift fitting results and calculated helium permeability
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| 编号 | 外径/mm | 高度/mm | 厚度/mm | 氦气压强/Torr | /(Hz/s)* | K/(m2/(Pa•s))@60 ℃ | | Prex1 | 13.84±0.10 | 15.60±0.20 | 1±0.10 | 785±1 | 0.00549±9.3E-8 | 1.982E-19±2.0E-20 | | Prex2 | 14.10±0.10 | 15.70±0.20 | 1±0.10 | 780±1 | 0.00542±1.1E-7 | 2.003E-19±2.1E-20 | | Prex3 | 13.84±0.10 | 16.46±0.20 | 1±0.10 | 782±3 | 0.00536±3.8E-7 | 1.978E-19±2.0E-20 | | Prex4 | 13.90±0.10 | 15.70±0.20 | 1±0.10 | 787±1 | 0.00571±4.6E-8 | 2.068E-19±2.1E-20 | | A**[7] | | | | | | 5.0E-19 | | B**[8] | | | | | | 2.5E-19 | | C**[9] | | | | | | 4.6E-19 | | ASG cell01 | 20.02±0.10 | 17.04±0.20 | 1±0.10 | 786±2 | 1.21E-5 | ≤6E-22 | | ASG cell02 | 19.92±0.10 | 16.98±0.20 | 1±0.10 | 784±1 | 5.23E-6 | ≤3E-22 |
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