Comptes Rendus
The international Boltzmann project – the contribution of the PTB
[Le programme international de détermination de la constante de Boltzmann : contribution du Physikalisch–Technische Bundesanstalt]
Comptes Rendus. Physique, Volume 10 (2009) no. 9, pp. 828-834.

Le Comité international des poids et mesures (CIPM) a recommandé de procéder à de nouvelles déterminations de la constante de Boltzmann en vue de préparer les nouvelles définitions des unités liées au kilogramme, à l'ampère, au kelvin et à la mole. Un projet de recherche concerté iMERAPlus a été mis en place afin de coordonner les travaux engagés sur ce sujet par l'Espagne (CEM), le Danemark (DFM), la France (LNE-INM/CNAM, Université Paris-nord), l'Italie (INRiM, Universités de Naples et Milan), le Royaume-Uni (NPL), l'Allemagne (PTB) et l'Institut européen de matériaux de références et mesures (IRMM). Les travaux engagés par ces laboratoires reposent sur des principes diversifiés et mettent en oeuvre des techniques très variées. Cet article présente les objectifs, les progrès et l'état d'avancement de la contribution de la PTB.

To support new determinations of the Boltzmann constant, which have been requested by the International Committee for Weights and Measures (CIPM) and which are necessary for preparative steps towards new definitions of the kilogram, the ampere, the kelvin and the mole, an iMERAPlus joint research project is coordinating the European activities in this field in Spain (CEM), Denmark (DFM), France (LNE-INM/CNAM, University Paris North), Italy (INRiM, Universities of Naples and Milan), United Kingdom (NPL), Germany (PTB) and in the European Institute for Reference Materials and Measurements (IRMM). In this major European research project, the Boltzmann constant will be determined with various methods. The aims and the progress to date of the PTB contribution are reviewed in this article.

Publié le :
DOI : 10.1016/j.crhy.2009.10.012
Keywords: Fundamental constant, Definition of the kelvin, Dielectric constant gas thermometry, Primary thermometer
Mot clés : Constantes fondamentales, Définition du kelvin, Thermomètre à constante diélectrique, Thermométrie primaire

Bernd Fellmuth 1 ; Joachim Fischer 1 ; Christof Gaiser 1 ; Tasanee Priruenrom 1 ; Wladimir Sabuga 1 ; Peter Ulbig 1

1 Physikalisch–Technische Bundesanstalt, Abbestr. 2-12, 10587 Berlin, Germany
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Bernd Fellmuth; Joachim Fischer; Christof Gaiser; Tasanee Priruenrom; Wladimir Sabuga; Peter Ulbig. The international Boltzmann project – the contribution of the PTB. Comptes Rendus. Physique, Volume 10 (2009) no. 9, pp. 828-834. doi : 10.1016/j.crhy.2009.10.012. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2009.10.012/

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