Acta Physica Sinica, Volume. 69, Issue 15, 150601-1(2020)

Vacuum metrology based on refractive index of gas

Yu-Rong Xu1, Yang-Yang Liu1, Jin Wang1,2、*, Yu Sun1,2, Zhen-Hua Xi3, De-Tian Li3, and Shui-Ming Hu1,2
Author Affiliations
  • 1Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
  • 2CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026, China
  • 3Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, Lanzhou 730000, China
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    Figures & Tables(5)
    Experimental setup (LO, local oscillator; EOM, electro-optic modulator; IO, isolator).
    (a) Temperature readout with time and (b) its Allan deviation.
    (a) Cavity diagram; (b) temperature distribution inside the sample cell.
    Deviation between calculated and measured pressures.
    • Table 1.

      Uncertainty budget of determined argon pressures within 1 atm.

      各参数对氩气在1个大气压下压力测量的相对不确定度贡献

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      Table 1.

      Uncertainty budget of determined argon pressures within 1 atm.

      各参数对氩气在1个大气压下压力测量的相对不确定度贡献

      参数不确定度u(p)/ppm ΔP/mPa
      注: #表示A类不确定度, 其他为B类不确定度; *表示该项不确定度贡献将随压力增大而增大.
      温度T67
      频率ν#0.01
      氩气纯度5
      压缩滞后0.1
      ${A_\varepsilon }$4.0
      ${B_\varepsilon }$≤ 0.3*
      ${A_\mu }$0.05
      $B(T)$≤ 10*
      体积模量K27
      漏气率6
      ULE热膨胀0.6
      总计736
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    Yu-Rong Xu, Yang-Yang Liu, Jin Wang, Yu Sun, Zhen-Hua Xi, De-Tian Li, Shui-Ming Hu. Vacuum metrology based on refractive index of gas[J]. Acta Physica Sinica, 2020, 69(15): 150601-1

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    Paper Information

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    Received: May. 12, 2020

    Accepted: --

    Published Online: Dec. 30, 2020

    The Author Email:

    DOI:10.7498/aps.69.20200706

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