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A fully automated measurement system of thermal conductivity using a helium refrigerator.

[In Japanese. / En japonais.]

Author(s) : HOBARA N., MATSUKAWA M., MATSUURA N., FUJISHIRO H., NOTO K.

Type of article: Article

Summary

The authors developed a fully automated measurement system of thermal conductivity combining a helium refrigerator and a data-acquisition, processing and control system (NEC-9800 series) with RS232 C-GPIB lines. The thermal conductivity is measured by a conventional steady-state heat-flow method in the range of 15-200 K. It is found that a measurement of a NIST standard reference material ensures the high accuracy of 3% for this apparatus. Furthermore, the measured thermal conductivity of high-critical temperature oxide superconductor (BPSCCO) agrees with the typical data reported by a number of groups, and shows a clear enhancement below critical temperature.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1995-1574
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 28 - n. 12
  • Publication date: 1993
  • Document available for consultation in the library of the IIR headquarters only.

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