Precision volume measurements on silicon spheres

In the determination of the Avogadro constant N/sub A/, use is made of silicon spheres as volume-density standards, where volume measurements play a critical role. The experience gained at the IMGC is reviewed and new data are presented on the reproducibility of the results together with some prelim...

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Bibliographic Details
Published inProceedings of 20th Biennial Conference on Precision Electromagnetic Measurements pp. 476 - 477
Main Authors Sacconi, A., Panciera, R., Pasin, W.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1996
Subjects
Density measurement
Gain measurement
Instruments
Lattices
Length measurement
Measurement standards
Silicon
Temperature
Thermal expansion
Volume measurement
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Summary:In the determination of the Avogadro constant N/sub A/, use is made of silicon spheres as volume-density standards, where volume measurements play a critical role. The experience gained at the IMGC is reviewed and new data are presented on the reproducibility of the results together with some preliminary data on thermal expansion measurements.
ISBN:0780333764
9780780333765
DOI:10.1109/CPEM.1996.547173