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Title: Progress report for the CCT-WG5 high temperature fixed point research plan

An overview of the progress in High Temperature Fixed Point (HTFP) research conducted under the auspices of the CCT-WG5 research plan is reported. In brief highlights are: Provisional long term stability of HTFPs has been demonstrated. Optimum construction methods for HTFPs have been established and high quality HTFPs of Co-C, Pt-C and Re-C have been constructed for thermodynamic temperature assignment. The major sources of uncertainty in the assignment of thermodynamic temperature have been identified and quantified. The status of absolute radiometric temperature measurement has been quantified through the circulation of a set of HTFPs. The measurement campaign to assign low uncertainty thermodynamic temperatures to a selected set of HTFPs will begin in mid-2012. It is envisaged that this will be complete by 2015 leading to HTFPs becoming routine reference standards for radiometry and high temperature metrology.
Authors:
;  [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. National Physical Laboratory (NPL), Hampton Road, Teddington, Middlesex,TW11 0LW (United Kingdom)
  2. Physikalisch-Technische Bundesanstalt (PTB), Abbestrasse 2-12, 10587 Berlin (Germany)
  3. National Institute of Metrology (NIM), Bei San Huan Dong Lu No. 18, Beijing, 100013 (China)
  4. Laboratoire Commun de M├ętrologie (LNE-Cnam), 61, rue du Landy, 93210 Saint-Denis, La Plaine (France)
  5. National Measurement Institute of Japan (NMIJ), AIST, Tsukuba, Ibaraki (Japan)
Publication Date:
OSTI Identifier:
22224147
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1552; Journal Issue: 1; Conference: 9. international temperature symposium, Los Angeles, CA (United States), 19-23 Mar 2012; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALLOCATIONS; CARBON; COBALT; PLATINUM; RHENIUM; STABILITY; TEMPERATURE MEASUREMENT; THERMODYNAMICS