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Doping Experiments in Mercury Triple-Point Cells

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Abstract

Mercury is one of the fixed points that can be obtained with higher purity, and it also can be measured with high accuracy; this turns impurities into one of the dominant sources of uncertainty. This article summarizes the first steps that CEM has carried out to start an exhaustive study of the influence of impurities on the triple-point-of-mercury temperature by means of doping experiments. The basis to choose the doping elements are stated, the procedure to dope the cells is described together with the careful performance of the weighing of the alloy components, and the results obtained for Zn and Ag are also shown.

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Authors and Affiliations

  1. Centro Español de Metrología, Alfar 2, 28760, Tres Cantos, Spain

    C. Tabacaru, E. Gómez & D. del Campo

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  1. C. Tabacaru
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  2. E. Gómez
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  3. D. del Campo
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Correspondence to C. Tabacaru.

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Tabacaru, C., Gómez, E. & del Campo, D. Doping Experiments in Mercury Triple-Point Cells. Int J Thermophys 32, 1563–1572 (2011). https://doi.org/10.1007/s10765-011-0982-2

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  • DOI: https://doi.org/10.1007/s10765-011-0982-2

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