Title :
A reassessment of the molar volume of silicon and of the Avogadro constant
Author :
De Bièvre, Paul ; Valkiers, Staf ; Kessel, Rüdiger ; Taylor, Philip D P ; Becker, Peter ; Bettin, H. ; Peuto, Anna ; Pettorruso, Savino ; Fujii, K. ; Waseda, A. ; Tanaka, M. ; Deslattes, R.D. ; Peiser, H.S. ; Kenny, M.J.
Author_Institution :
Inst. for Reference Mater. & Meas., Eur. Comm., Geel, Belgium
fDate :
4/1/2001 12:00:00 AM
Abstract :
An “absolute” value for the molar volume of Si in Si single crystals is presented as 12.058 820 7(54) cm3 mol-1 with a relative standard uncertainty of 4.5·10 -7. It is argued that the consistency of most of the molar volume determinations is useful for evaluating the quality of the Si single crystals involved. A value for the Avogadro constant is derived as 6.022 133 9(27)·1023 mol-1 having a relative standard uncertainty of 4.6·10-7
Keywords :
constants; density; elemental semiconductors; measurement uncertainty; silicon; Avogadro constant; Si; crystal quality; molar volume; relative standard uncertainty; Atomic measurements; Crystalline materials; Crystals; Geologic measurements; Isotopes; Laboratories; Metrology; Silicon; Uncertainty; Volume measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
