THERMODYNAMIC INCONSISTENCY OF THE ITS-90 BELOW 1,5-K

被引：8
|
作者：
FELLMUTH, B
SCHUSTER, G
机构：
[1] Physikalisch-Technische Bundesanstalt, Institut Berlin, 1000 Berlin 10
来源：
METROLOGIA | 1993年 / 29卷 / 06期
关键词：
D O I：
10.1088/0026-1394/29/6/005
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
New thermodynamic calculations have been made of the He-3 vapour-pressure scale using recently-published thermal and PVT data for the liquid and vapour phases. It is shown that by making reasonable choices of the data for the second and third virial coefficients of the vapour, and for the heat capacity of the liquid, good agreement can be obtained between a calculated vapour-pressure scale and recent experimental observations based on magnetic thermometry. These have revealed deviations of the ITS-90 from thermodynamic temperature of up to 1 mK at 0,65 K.
引用
收藏
页码：415 / 423
页数：9
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