220 citations · 443 across the 5 of their papers we have counts for
5 papers
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…
Finite element analysis of surface-stress effects in the Si lattice-parameter measurement
Carlo Sasso, Danilo Quagliotti, Enrico Massa +2
A stress exists in solids surfaces, similarly to liquids, also if the underlying bulk material is stress-free. This paper investigates the surface stress effect on the measured val…
Measurement of the \{220\} lattice-plane spacing of a Si crystal
Enrico Massa, Giovanni Mana, Ulrich Kuetgens +1
The spacing of the \{220\} lattice planes of a Si crystal was measured by combined x-ray and optical interferometry to a relative accuracy. The result is…
An accurate determination of the Avogadro constant by counting the atoms in a 28Si crystal
B. Andreas, Y. Azuma, G. Bartl +23
The Avogadro constant links the atomic and the macroscopic properties of matter. Since the molar Planck constant is well known via the measurement of the Rydberg constant, it is al…
Comparison of the INRIM and PTB lattice-spacing standards
E Massa, G Mana, U Kuetgens
To base the kilogram definition on the atomic mass of the silicon 28 atom, the present relative uncertainty of the silicon 28 lattice parameter must lowered to 3E-9. To achieve thi…