A New Generation of Multicells for Cryogenic Fixed Points at BNM/INM
A New Generation of Multicells for Cryogenic Fixed Points at BNM/INM
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BNM/INM 新一代低温固定点多室
DOI：
10.1063/1.1627121
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
A. Peruzzi
中科院分区：
文献类型：
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作者：
Y. Hermier;L. Pitre;C. Geneville;A. Vergé;G. Bonnier;D. Head;B. Fellmuth;L. Wolber;A. Szmyrka;L. Lipiński;M. Groot;A. Peruzzi
2000年1月，在实现低温标准领域，启动了一个名为“多电池”的欧洲项目[1]。在14K至234K的范围内，由两个不同的合作伙伴：BNM-INM和IMGC[2]开发和制造了两种相互竞争的模块化多室单元(多单元)设计，以实现ITS-90的低温固定点。多电池设备允许在同一运行中校准最多三个温度计，在低温范围内的所有ITS-90三点处，包括水银点。可以选择性地将几个次级参考点添加到系统中。元素数量的限制主要是由于热效应(热均匀度和响应时间)以及用于测量熔化曲线的量热计的实验空间的尺寸。为了缩短响应时间，含有该物质的多单元中的每个元素的相变界面必须与其保持紧密的热接触。
In January 2000 a European Project called “MULTICELLS” started, in the field of the realisation of low‐temperature standards [1]. In the range from 14 K to 234 K, two competing designs of modular multi‐compartment cells (multicells) for the realisation of low‐temperature fixed points of the ITS‐90 were developed and fabricated by two different partners: BNM‐INM and IMGC [2]. The multicells device allows the calibration, in the same run, of up to three thermometers at all the ITS‐90 triple points in the low‐temperature range, including the mercury point. Several secondary reference points could be optionally added to the system. The limitation of the number of elements is mainly due to thermal effects (thermal homogeneity and response time) and to the dimension of the experimental space of the calorimeter used for measuring the melting curves. In order to reduce the response time, the phase‐transition interface of each element of the multicell containing the substance must be in close thermal contact with ...