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The correlation of the measurements by counting Si atoms
Michael Borys, Ingo Busch, Kenichi Fujii +9
An additional value of the Avogadro constant was obtained by counting the atoms in isotopically enriched Si spheres. With respect to the previous determination, the spheres were et…
Improved measurement results for the Avogadro constant using a 28Si-enriched crystal
Y Azuma, P Barat, G Bartl +26
New results are reported from an ongoing international research effort to accurately determine the Avogadro constant by counting the atoms in an isotopically enriched silicon cryst…
Diffraction effects in length measurements by laser interferometry
Carlo Paolo Sasso, Enrico Massa, Giovanni Mana
High-accuracy dimensional measurements by laser interferometers require corrections because of diffraction, which makes the effective fringe-period different from the wavelength of…
A more accurate measurement of the Si lattice parameter
Enrico Massa, Carlo Paolo Sasso, Giovanni Mana +1
In 2011, a discrepancy between the values of the Planck constant measured by counting Si atoms and by comparing mechanical and electrical powers prompted a review, among others, of…