气体声学温度计的研究与进展

Development of study about acoustic gas thermometry

热力学温度是测量温度的基准,是国际上公认的最基本的温度。气体声学温度计是测量中低温区热力学温度最精确的方法之一,具有最小的测量不确定度。运用气体声学测温方法不仅可以精确测量热力学温度,还可以精确测定玻尔兹曼常数,从而实现对开尔文的重新定义。针对气体声学温度计测量热力学温度的相关研究工作,对气体声学测量热力学温度的研究进程进行了综述,总结介绍了气体声学测温的原理和技术,并对未来声学温度计的研究工作进行了展望。

Thermodynamic temperature is the basic standard for measuring temperature and the most fundamental tempera- ture which is internationally recognized. Acoustic gas thermometry is one of the most accurate methods to measure thermodynamic temperature in the low temperature zone for it can get the smallest uncertainty of measurement. By using acoustic gas thermometry, thermodynamic temperature can not only be measured accurately, but also Boltzmann constant can be measured which can dedicate to the work of redefining the Kelvin. Based on the former work of acoustic gas thermometry, the development of study about acoustic gas thermometry was summarized, the theory and technology of the acoustic gas thermometry for measuring thermodynamic temperature were introduced, and future work for acoustic gas thermometry was forecasted.