Thermometry Based on the Melting Line of 3He

Chapter
Part of the International Cryogenics Monograph Series book series (ICMS)

Abstract

Few types of thermometry are available below 1 K, and none is sufficiently well established, readily available, or widely used in laboratories around the world. As discussed in the preceding chapters, even the ITS-90 below 1 K is affected by the degradation of the experimental data forming its basis. As far as the use of gases is concerned, the choice is restricted to 3He. In both vapor-pressure thermometry and gas thermometry, increasing experimental difficulties are encountered below 1,000 mK. In no way, can these techniques be applied much below 500 mK.

Keywords

Microwave Anisotropy Platinum Prefix Refrigeration 

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Divisione TermodinamicaIstituto Nazionale di Ricerca Metrologica (INRIM)TorinoItaly

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