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Zeitschrift für Physik B Condensed Matter

, Volume 87, Issue 3, pp 289–298 | Cite as

A determination of the Avogadro Constant

  • P. Sevfried
  • P. Becker
  • A. Kozdon
  • F. Lüdicke
  • F. Spieweck
  • J. Stümpel
  • H. Wagenbreth
  • D. Windisch
  • P. De Bièvre
  • H. H. Ku
  • G. Lenaers
  • T. J. Murphy
  • H. S. Peiser
  • S. Valkiers
Original Contributions

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.

Keywords

Spectroscopy Silicon Neural Network State Physics Complex System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • P. Sevfried
    • 1
  • P. Becker
    • 1
  • A. Kozdon
    • 1
  • F. Lüdicke
    • 1
  • F. Spieweck
    • 1
  • J. Stümpel
    • 1
  • H. Wagenbreth
    • 1
  • D. Windisch
    • 1
  • P. De Bièvre
    • 2
  • H. H. Ku
    • 2
  • G. Lenaers
    • 2
  • T. J. Murphy
    • 2
  • H. S. Peiser
    • 2
  • S. Valkiers
    • 2
  1. 1.Physikalisch-Technische BundesanstaltBraunschweigFederal Republic of Germany
  2. 2.Central Bureau for Nuclear MeasurementsCommission of the European Communities-JRCGeelBelgium

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