Reproducibilities of Carbon and Germanium Thermometers at 4.2°K

  • M. H. Edlow
  • H. H. Plumb
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 6)


In the last few years a program of precision secondary thermometry in the 2–4°K range has been greatly facilitated by the use of metallic storage dewars which contain a few liters of liquid helium. The temperature distribution in these nearly “constant temperature” baths have been explored with both resistance and vapor-pressure thermometers. The results of these investigations, and also the reproducibilities of resistance thermometers, are presented.


Evaporation Rate Liquid Helium Cold Spot Carbon Resistor Helium Bath 
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  1. 1.
    H.H. Plumb and M. H. Edlow, Rev. Sci. Instr., Vol. 30, p. 376 (1959).CrossRefGoogle Scholar
  2. 2.
    H. H. Plumb, M. H. Edlow, and G. Cataland, Proc. 10th Inter. Congr. of Refrig., Copenhagen (1959).Google Scholar
  3. 3.
    R. J. Corruccini. Private communication (to be published in Rev. Sci. Instr.).Google Scholar

Copyright information

© Springer Science+Business Media New York 1961

Authors and Affiliations

  • M. H. Edlow
    • 1
  • H. H. Plumb
    • 1
  1. 1.National Bureau of StandardsUSA

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