| Zugriffsnummer | 25916 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Determination of the Avogadro constant by counting the atoms in a 28Si crystal |
| Autor(in); Institution |
Andreas, Birk; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Azumo, Y.; National Metrology Institute of Japan (NMIJ), Tsukuba, JAPAN
Bartl, Guido; 5.4, Interferometrie an Maßverkörperungen, PTB-Braunschweig
Becker, Peter; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Bettin, Horst; 3.2, Gasanalytik und Zustandsverhalten, PTB-Braunschweig
Borys, Michael; 1.1, Masse, PTB-Braunschweig
Busch, Ingo; 5.1, Oberflächenmesstechnik, PTB-Braunschweig
Gray, M.; National Measurement Institute (NMI), Lindfield, NSW, AUSTRALIA
Fuchs, P.; Bundesamt für Metrologie (METAS), Bern-Wabern, SWITZERLAND
Fujii, K.; National Metrology Institute of Japan (NMIJ), Tsukuba, JAPAN
Fujimoto, H.; National Metrology Institute of Japan (NMIJ), Tsukuba, JAPAN
Kessler, E.; National Institute of Standards and Technology (NIST), Gaithersburg, MD, USA
Kuetgens, Ulrich; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Kuramoto, N.; National Metrology Institute of Japan (NMIJ), Tsukuba, JAPAN
Mana, G.; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Manson, P.; National Measurement Institute (NMI), Lindfield, NSW, AUSTRALIA
Massa, E.; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Mizushima, S.; National Metrology Institute of Japan (NMIJ), Tsukuba, JAPAN
Nicolaus, Arnold; 5.4, Interferometrie an Maßverkörperungen, PTB-Braunschweig
Picard, P.; Bureau International des Poids et Mesures (BIPM), Sèvres, FRANCE
Pramann, Axel; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Rienitz, Olaf; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Schiel, Detlef; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Valkiers, S.; Institute for Reference Materials and Measurements (IRMM), Geel, BELGIUM
Waseda, A.; National Metrology Institute of Japan (NMIJ), Tsukuba, JAPAN
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| Quelle/Jahr | Physical Review Letters: 106 (2011), 3, 030801-1 - 030801-4 |
| ISSN | 0031-9007 (PRINT) ; 1079-7114 (ONLINE) |
| DOI | |
| Verlag | Ridge, NY: American Physical Society |
| Klassifikationscode | PACS: 06.20.Jr ; PACS: 06.30.Dr ; PACS: 82.80.Ms |
| Zusammenfassung | The Avogadro constant links the atomic and the macroscopic properties of matter. Since the molar Planck constant is well known via the measurement of the Rydberg constant, it is also closely related to the Planck constant. In addition, its accurate determination is of paramount importance for a definition of the kilogram in terms of a fundamental constant. We describe a new approach for its determination by counting the atoms in 1 kg single-crystal spheres, which are highly enriched with the 28Si isotope. It enabled isotope dilution mass spectroscopy to determine the molar mass of the silicon crystal with unprecedented accuracy. The value obtained, NA = 6.022 140 78(18) × 1023 mol-1, is the most accurate input datum for a new definition of the kilogram. |
Zitierung
Andreas, B., Azumo, Y., Bartl, G., Becker, P., Bettin, H., Borys, M., Busch, I., Gray, M., Fuchs, P., Fujii, K., Fujimoto, H., Kessler, E., Krumrey, M., Kuetgens, U., Kuramoto, N., Mana, G., Manson, P., Massa, E., Mizushima, S., Nicolaus, A., Picard, P., Pramann, A., Rienitz, O., Schiel, D., Valkiers, S., & Waseda, A. (2011). Determination of the Avogadro constant by counting the atoms in a ²⁸Si crystal. Physical Review Letters, 106(3), 030801-1–030801-4. https://doi.org/10.1103/physrevlett.106.030801