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PRODUCING TEMPERATURES DOWN TO 0.9 K AND ITS MEASUREMENTS.

Author(s) : CHAUDHURI N.

Type of article: Article

Summary

DESIGN OF A CRYOSTAT, FABRICATED FOR INVESTIGATION OF ELECTRICAL AND GALVANOMETRIC PROPERTIES OF SODIDS AT CRYOGENIC TEMPERATURES. TEMPERATURES DOWN TO 0.9 K HAVE BEEN PRODUCED BY PUMPING THROUGH A SMALL ORIFICE OVER ANADIABATICALLY ISOLATED BATH OF HELIUM 4. ACHIEVEMENT OF LOWER TEMPERATURES HAS BEEN LIMITED BY THE SIZE OF THE ORIFICE. THE TEMPERATURES HAVE BEEN MEASURED BY A SUITABLE GERMANIUM AND A CARBON RESISTANCE THERMOMETER ON THE SAMPLE HOLDER INSIDE THE LIQUID HELIUM BATH AND BY MEASURING SATURATED VAPOUR PRESSURE OF LIQUID HELIUM 4 WITH MERCURY MANOMETER, OIL MANOMETER AND FINALLY WITH MCLEOD GAUGE. J. V.

Details

  • Original title: PRODUCING TEMPERATURES DOWN TO 0.9 K AND ITS MEASUREMENTS.
  • Record ID : 1982-0013
  • Languages: English
  • Source: Indian J. Cryog. - vol. 3 - n. 4
  • Publication date: 1978
  • Document available for consultation in the library of the IIR headquarters only.

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