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ANALYSIS OF FRACTIONAL MASS OF LIQUID HELIUM REMAINING AT DIFFERENT TEMPERATURES DURING REFRIGERATION BETWEEN 4.2 AND 1.3 K.

Author(s) : ARUNACHALAM S.

Type of article: Article

Summary

THE FRACTIONAL MASS OF LIQUID HELIUM REMAINING AT DIFFERENT TEMPERATURES IN THE RANGE 4.2 AND 1.3 K IN AN EXPERIMENTAL CRYOSTAT HAVE BEEN MEASURED. THIS DATA IS ANALYSED BASED ON 2 MODELS OF FLASH EVAPORATION DEVELOPED BY NICOL AND BOHM, NAMELY THE REVERSIBLE AND IRREVERSIBLE. THE FORMER ASSUMES THAT IN A BATH, EVAPORATION OF A PART OCCURS SINCE THE NECESSARY LATENT HEAT IS TAKEN FROM IT AND THE REMAINING LIQUID GETS COOLED. THE LATTER MODEL ASSUMES THAT THE COOLING DOWN OF THE ENTIRE FLUID OF THE BATH OCCURS BEFORE A FRACTION OF THIS EVAPORATES. THE EXPERIMENTAL DATA IS IN CLOSE AGREEMENT WITH THE REVERSIBLE MODEL UP TO ABOUT 1.8 K. HOWEVER, DEVIATION IS FOUND TO OCCUR BELOW THIS TEMPERATURE.

Details

  • Original title: ANALYSIS OF FRACTIONAL MASS OF LIQUID HELIUM REMAINING AT DIFFERENT TEMPERATURES DURING REFRIGERATION BETWEEN 4.2 AND 1.3 K.
  • Record ID : 1989-1240
  • Languages: English
  • Source: Indian J. Cryog. - vol. 12 - n. 2
  • Publication date: 1987
  • Document available for consultation in the library of the IIR headquarters only.

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