New Evaluation of T- T2000 from 0.02 K to 1 K by Independent Thermodynamic Methods

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • J. Engert
  • A. Kirste
  • A. Shibahara
  • A. Casey
  • L. V. Levitin
  • J. Saunders
  • O. Hahtela
  • A. Kemppinen
  • E. Mykkänen
  • M. Prunnila
  • D. Gunnarsson
  • L. Roschier
  • Matthias Meschke

  • J.P. Pekola

Organisaatiot

  • Physikalisch-Technische Bundesanstalt
  • Royal Holloway University of London
  • VTT Technical Research Centre of Finland
  • Aivon Oy

Kuvaus

This paper reports on the results achieved within the European Metrology Research Programme project “Implementing the new kelvin—InK” in the low-temperature range below 1 K. One of the main objectives of the InK project was the determination of new thermodynamic temperature data for comparison with the Provisional Low Temperature Scale 2000 (PLTS-2000), to provide reliable T- T2000 values. To this end, we have investigated three different types of primary thermometers: the current sensing noise thermometer, the primary magnetic field fluctuation thermometer and the Coulomb blockade thermometer. Based on a thorough investigation of the thermometers, detailed uncertainty budgets were established for the measurement of thermodynamic temperatures. Direct comparison measurements between all thermometers demonstrate the agreement of temperature measurements within less than 1 %. Our new T- T2000 data confirm the correctness of the PLTS-2000 in the temperature range from 20 mK up to about 700 mK with relative combined standard uncertainties better than 0.62 %.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli125
Sivumäärä11
JulkaisuINTERNATIONAL JOURNAL OF THERMOPHYSICS
Vuosikerta37
Numero12
TilaJulkaistu - 1 joulukuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 9115105