Towards A Quantum Standard For Absolute Pressure Measurements In The Range 200 Pa To 20 Kpa Based On A Superconducting Microwave Cavity

P. Gambette,R.M. Gavioso,D. Madonna Ripa,M.D. Plimmer,L. Pitre

2018 CONFERENCE ON PRECISION ELECTROMAGNETIC MEASUREMENTS (CPEM 2018)（2018）

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摘要

We present a novel pressure standard for helium gas based on the measurement of resonance frequencies of a superconducting cavity and ab initio calculations of the thermophysical properties of helium. It should improve significantly the accuracy of measurements in the range 200 Pa to 20 kPa.

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关键词

Microwave measurement, pressure measurement, frequency measurement, precision measurements, superconductivity

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