Present state of the Avogadro constant determination from silicon crystals with natural isotopic compositions

被引：78

作者：

Fujii, K

Waseda, A

Kuramoto, N

Mizushima, S

Becker, P

Bettin, H

Nicolaus, A

Kuetgens, U

Valkiers, S

Taylor, P

De Bièvre, P

Mana, G

Massa, E

Matyi, R

Kessler, EG

Hanke, M

机构：

[1] NMIJ, Tsukuba, Ibaraki, Japan

[2] PTB, D-38116 Braunschweig, Germany

[3] IRMM, European Communities JRC, B-2440 Geel, Belgium

[4] IMGC, I-10135 Turin, Italy

[5] NIST, Gaithersburg, MD 20899 USA

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2005年 / 54卷 / 02期

关键词：

Avogadro constant; density; fundamental physical constant; lattice constant; molar mass; molar volume; silicon crystal;

D O I：

10.1109/TIM.2004.843101

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A determination of the Avogadro constant from two selected silicon single-crystals with natural isotopic compositions is described. The density, molar mass, and lattice spacing of the two crystals were measured at NMIJ, PTB, IRMM, IMGC, and NIST. When all the data are combined, they lead to a value of the Avogadro constant of 6.022 1353 (18) x 10(23) mol(-1) with a relative combined standard uncertainty of 3.1 x 10(-7).

引用

页码：854 / 859

页数：6

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