The Avogadro Project uses silicon-28 atoms instead of carbon-12 for the kilogram definition
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.
The retrieved papers, specifically those detailing the work of the International Avogadro Coordination (such as papers 6 and 7), confirm that the Avogadro Project used silicon-28-enriched crystals to determine the Avogadro constant and support the new definition of the kilogram.
Becker P, Bettin H. The Avogadro constant: determining the number of atoms in a single-crystal ²⁸Si sphere.. 2011. https://doi.org/10.1098/rsta.2011.0222
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.
See more details
Yang L, Yang L, Mester Z, Sturgeon RE, Meija J. Determination of the atomic weight of 28Si-enriched silicon for a revised estimate of the Avogadro constant.. 2012. https://doi.org/10.1021/ac203006j
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.
The paper trail · every fact has a biography
Challenge the receipt
Citation formatting by citeproc-js (Frank Bennett) and the Citation Style Language project. Source and licenses.
Terms · Privacy · How verdicts work · Dispute this receipt