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EnglishThe 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.
| Titolo: | Self-weight effect in the measurement of the volume of silicon spheres | |
| Autori: | ||
| Data di pubblicazione: | 2018 | |
| Rivista: | METROLOGIA | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1088/1681-7575/aaaed5 | |
| Abstract: | The volume of 28Si spheres about 94 mm in diameter is an input datum for the determination of th...e 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. | |
| Full-text (pubblici): | partially_open | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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