METRICA, l’archivio istituzionale della produzione scientifica dell’Istituto Nazionale di Ricerca Metrologica, ha lo scopo di raccogliere, documentare, conservare e pubblicare, anche ad accesso aperto, i prodotti della ricerca dell’Ente.
METRICA utilizza la piattaforma IRIS (Institutional Research Information System) sviluppata da Cineca.
EnglishThe counting of 28Si atoms plays a fundamental role in the realisation of the unit of mass in terms of stipulated values of fundamental physical constants. In this realisation, the measurement of the volume of a 28Si sphere is a fundamental step. This paper reports a finite element analysis of the self-weight effect on the volume determination, taking the crystal anisotropy into account. The sphere volume might be overestimated from 0.3 × 10−9 to 5.1 × 10−9 (relative terms), depending on the crystal orientation and measurement procedure.
Gravity and anisotropy effects in the volume determination of Si spheres for the kilogram realisation / Mari, D; Nicolaus, A; Kuhn, E; Kuramoto, N; Mana, G; Massa, E. - In: METROLOGIA. - ISSN 0026-1394. - 57:4(2020), p. 045004. [10.1088/1681-7575/ab7c7d]
| Titolo: | Gravity and anisotropy effects in the volume determination of Si spheres for the kilogram realisation | |
| Autori: | ||
| Data di pubblicazione: | 2020 | |
| Rivista: | METROLOGIA | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1088/1681-7575/ab7c7d | |
| Abstract: | The counting of 28Si atoms plays a fundamental role in the realisation of the unit of mass in ter...ms of stipulated values of fundamental physical constants. In this realisation, the measurement of the volume of a 28Si sphere is a fundamental step. This paper reports a finite element analysis of the self-weight effect on the volume determination, taking the crystal anisotropy into account. The sphere volume might be overestimated from 0.3 × 10−9 to 5.1 × 10−9 (relative terms), depending on the crystal orientation and measurement procedure. | |
| Full-text (pubblici): | partially_open | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| Mari_2020_Metrologia_57_045004.pdf | Versione editoriale | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia | |
| PAPER_self_weight_ANISOTROPY_PRE-PRINT.pdf | PRE-PRINT articolo principale | Documento in Pre-print | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri |
http://hdl.handle.net/11696/63130
Copyright © 2021