Study of standard thermometers and their reproduction of the λ point in liquid helium

被引：3

作者：

Astrov, DN

Korostin, SV

机构：

来源：

MEASUREMENT TECHNIQUES | 1999年 / 42卷 / 07期

关键词：

Liquid Helium; Drift Rate; Phase Transition Point; Sensor Coil; Radio Engineer Measurement;

D O I：

10.1007/BF02512093

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Self-calibrated resistance thermometers to be used as standards have been investigated. The heat exchange of the sensor coil with liquid helium per unit coil surface area at 0.3 K is 12 times better than that of a conventional gas-filled thermometer. The exchange is due to Kapitza surface thermal resistance. The lambda point in liquid helium filling of the thermometer is reproducible:to within 0.1 mK.

引用

页码：689 / 692

页数：4