计量学报2018，Vol.39Issue(2)：255-261,7.DOI:10.3969/j.issn.1000-1158.2018.02.24
单圆柱微波谐振法测量热力学温度的研究
Thermodynamic Temperature Measurement Using Single Cylindrical Microwave Resonator
摘要
Abstract
Using the microwave resonant method,the thermodynamic temperature is measured in the temperature range from 253 K to 303 K based on the gas refractive index primary thermometry by using the properties for argon from"ab initio" quantum mechanics calculation theory and experimental results and the microwave resonant method.Four transverse magnetic microwave resonance frequencies were measured to obtain the refractive index in argon at 700 kPa,the consistence of the refractive index from different microwave modes was better than 1 × 10-8.The thermodynamic temperature then was determined by combining the refractive index measurement results and the viral equation of state for argon.The uncertainty of the difference of the thermodynamic temperature T and the ITS-90 international temperature Tgo was evaluated to be 11.6 mK,and the results agreed with the Consultative Committee for Thermometry (CCT) recommendation values well.The uncertainty from this method will be decreased with the development of the theoretical calculation for argon and the improvement of the pressure measurement in the next future.关键词
计量学/热力学温度/微波谐振/圆柱谐振腔/气体折射率/氩气Key words
metrology/thermodynamic temperature/microwave resonance/cylindrical resonator/refractive index in gases/argon分类
通用工业技术引用本文复制引用
崔劲,冯晓娟,林鸿,张金涛,宦可为..单圆柱微波谐振法测量热力学温度的研究[J].计量学报,2018,39(2):255-261,7.基金项目
国家重点研发计划项目(2016YFF0200101) （2016YFF0200101）
国家自然科学基金(51627809,51476153) （51627809,51476153）
