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A determination of the Avogadro Constant

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Zeitschrift für Physik B Condensed Matter

Abstract

We have determined Avogadro's constantN A using a direct method. The result ofN A =6.0221363×1023 mol−1 differs from the most recent CODATA value of 6.0221367×1023 mol−1 by only 0.07 ppm, the relative uncertainties being 1.1. ppm and 0.6 ppm, respectively. The value was derived from the determination of the lattice parameter, the density and the molar mass of a silicon single crystal. It will be possible in the future to further reduce the uncertainties of measurement by the procedure described here.

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Sevfried, P., Becker, P., Kozdon, A. et al. A determination of the Avogadro Constant. Z. Physik B - Condensed Matter 87, 289–298 (1992). https://doi.org/10.1007/BF01309282

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  • DOI: https://doi.org/10.1007/BF01309282

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