The Avogadro Project uses silicon-28 atoms instead of carbon-12 for the kilogram definition
the verdict
SUPPORTED
the evidence backs this
confidence 81/100
The Avogadro Project utilized high-purity silicon-28 single-crystal spheres to precisely measure the Avogadro constant, which was instrumental in redefining the kilogram in terms of fundamental physical constants rather than a physical artifact.
Evidence for · 2
The Avogadro constant: determining the number of atoms in a single-crystal ²⁸Si sphere.
2011 · cited by 8
The paper explains how determining the Avogadro constant using 1 kg single-crystal spheres highly enriched with silicon-28 provided crucial data for the revised kilogram definition.
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More for · 1
Determination of the atomic weight of 28Si-enriched silicon for a revised estimate of the Avogadro constant.
2012 · cited by 8
The paper discusses the assessment of silicon-28-enriched silicon by the International Avogadro Coordination to refine estimates of the Avogadro constant for the SI redefinition.