A DETERMINATION OF THE AVOGADRO CONSTANT
Avogadro's constant N(A) has been determined using a direct method. The result of N(A) = 6.0221363 x 1.0 E23/mol differs from the most recent CODATA value of 6.0221367 x 1.0 E23/mol 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. This procedure may, in the future, be used to reduce further the uncertainties of measurement.
Bibliographic Reference: ARTICLE: ZEITSCHRIFT FUER PHYSIK B, CONDENSED MATTER, VOL. 87 (1992) PP. 289-298
Record Number: 1989199211079 / Last updated on: 1992-12-08
Original language: EN
Available languages: en