Title :
Comparison of Density Difference Measurements by Flotation at PTB and NMIJ
Author :
Bettin, H. ; Toth, H. ; Waseda, A. ; Fujii, K.
Author_Institution :
Phys.-Technische Bundesanstalt, Braunschweig
Abstract :
The results of density difference measurements by the flotation apparatuses of NMLJ and PTB for four silicon samples are reported. The flotation method is used to investigate the inhomogeneity and to determine the absolute density of silicon crystals for the determination of the Avogadro constant
Keywords :
constants; density measurement; silicon; Avogadro constant; NMIJ; PTB; density difference measurements; flotation apparatuses; silicon crystal absolute density; silicon crystal inhomogeneity; silicon samples; Calibration; Crystals; Density measurement; Isothermal processes; Metrology; Pressure measurement; Silicon; Solids; Temperature; Thermal expansion;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location :
London
Print_ISBN :
0-7803-8494-6
Electronic_ISBN :
0-7803-8494-6
DOI :
10.1109/CPEM.2004.305305
