Further Measurement of the Melting Point of Gallium by Johnson Noise Thermometry
(0) This paper reports the further measurement of the melting point of gallium by the Johnson noise thermometer of NIM. The facility was the same of previous measurements. The difference from the previous existed in that the imperfection effect was corrected from the measurement result. With this correction, the melting point of gallium was further determined to be 302.9210 K of the standard uncertainty of 6.5 mK for a total 450 hours integration time. The difference from the value assigned by ITS-90 is (T-T90)=6.4 inK, which agrees with that determined by the primary acoustic thermometer of the National Institute of Standard and Technology (NIST).
Metrology Johnson noise thermometry Melting point of gallium Thermodynamic temperature
ZHANG Jin-tao XUE Shou-qing SUN Jian-ping ZHENG Wei
National Institute of Metrology, Beijing 100013, China
国际会议
2008年国际温度与热物性测量会议(TEMP BEIJING 2008)
北京
英文
26-30
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）