The volume of 28Si spheres about 94 mm in diameter is an input datum for the determination of the Avogadro constant. We report a finite element analysis of the self-weight effect on the volume determination via optical interferometric measurements of the sphere diameters. The self-weight expansion or shrinkage of the equatorial diameters, which ranges from −31 pm to +180 pm, depends on the southern latitude of the supports.

Self-weight effect in the measurement of the volume of silicon spheres / Mari, D; Massa, E; Kuramoto, N; Mana, G. - In: METROLOGIA. - ISSN 0026-1394. - 55:2(2018), pp. 294-301. [10.1088/1681-7575/aaaed5]

Self-weight effect in the measurement of the volume of silicon spheres

Mari, D;Massa, E;Mana, G
2018

Abstract

The volume of 28Si spheres about 94 mm in diameter is an input datum for the determination of the Avogadro constant. We report a finite element analysis of the self-weight effect on the volume determination via optical interferometric measurements of the sphere diameters. The self-weight expansion or shrinkage of the equatorial diameters, which ranges from −31 pm to +180 pm, depends on the southern latitude of the supports.
File in questo prodotto:
File Dimensione Formato  
2018_Self-weight effect in the measurement of the volume of Si speres.pdf

non disponibili

Tipologia: Versione editoriale
Licenza: Non Pubblico - Accesso privato/ristretto
Dimensione 1.34 MB
Formato Adobe PDF
1.34 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
PRE-PRINT_PAPER_Self-weight-effect_Si-sphere.pdf

accesso aperto

Tipologia: Documento in Pre-print
Licenza: Pubblico - Tutti i diritti riservati
Dimensione 992.65 kB
Formato Adobe PDF
992.65 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11696/57585
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 2
social impact