| Zugriffsnummer | 38671 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | A new generation of 99.999 % enriched 28Si single crystals for the determination of Avogadro's constant |
| Autor(in); Institution |
Abrosimov, Nikolay V.; Leibniz Institute for Crystal Crowth, Berlin, GERMANY
Aref'ev, Dmitri Gennadievich; Stock Company Production Association Electrochemical Plant (SC PA ECP), Zelenogorsk, RUSSIA
Becker, Peter; PTB-Braunschweig, retired staff
Bettin, Horst; 1.8, Masse - Darstellung der Einheit, PTB-Braunschweig
Bulanov, Andrei Dmitrievich; G.G. Devyatykh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences (IChHPS RAS), Nizhny Novgorod, RUSSIAN FEDERATION
Churbanov, Mikhail F.; G.G. Devyatykh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences (IChHPS RAS), Nizhny Novgorod, RUSSIAN FEDERATION
Filimonov, Vasil'evich; Stock Company Production Association Electrochemical Plant (SC PA ECP), Zelenogorsk, RUSSIA
Gavva, Vladimir A.; G.G. Devyatykh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences (IChHPS RAS), Nizhny Novgorod, RUSSIAN FEDERATION
Godisov, Oleg Niklenovich; Stock Company Production Association Electrochemical Plant (SC PA ECP), Zelenogorsk, RUSSIA
Gusev, Anatoli V.; G.G. Devyatykh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences (IChHPS RAS), Nizhny Novgorod, RUSSIAN FEDERATION
Kotereva, Tatiana; G.G. Devyatykh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences (IChHPS RAS), Nizhny Novgorod, RUSSIAN FEDERATION
Nietzold, Dieter; DNConsult, Jena, GERMANY
Peters, Manfred; PTB-Braunschweig, retired staff
Potapov, Alexander Mikhailovich; G.G. Devyatykh Institute of Chemistry of High-Purity Substances of the Russian Academy of Sciences (IChHPS RAS), Nizhny Novgorod, RUSSIAN FEDERATION
Pohl, Hans-Joachim; Jena, GERMANY
Pramann, Axel; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Riemann, Helge; Leibniz Institute for Crystal Crowth, Berlin, GERMANY
Scheel, Timm; 1.8, Masse - Darstellung der Einheit, PTB-Braunschweig
Stosch, Rainer; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Wundrack, Stefan; 3.1, Metrologie in der Chemie, PTB-Braunschweig
Zakel, Sabine; 3.7, Grundlagen des Explosionsschutzes, PTB-Braunschweig
|
| Quelle/Jahr | Metrologia: 54 (2017), 4, 599 - 609 |
| ISSN | 0026-1394 (PRINT) ; 1681-7575 (ONLINE) |
| DOI | |
| Verlag | Bristol: IOP |
| Klassifikationscode | PACS: 06.20.Jr ; PACS: 06.30.Dr ; PACS: 32.10.Bi ; PACS: 61.72.U- ; PACS: 68.65.-k ; PACS: 81.05.Cya ; PACS: 81.10.-h |
| Freie Schlagworte | Avogadro constant ; silicon ; isotope enrichment ; XRCD method ; kilogram ; redefinition ; revised S |
| Zusammenfassung | A metrological challenge is currently underway to replace the present definition of the kilogram. One prerequisite for this is that the Avogadro constant, NA, which defines the number of atoms in a mole, needs to be determined with a relative uncertainty of better than 2 × 10-8. The method applied in this case is based on the X-ray crystal density (XRCD) experiment using silicon crystals. The first attempt, in which silicon of natural isotopic composition was used, failed. The solution chosen subsequently was the usage of silicon highly enriched in 28Si from Russia. First, this paper reviews previous efforts from the very first beginnings to an international collaboration with the goal of producing a 28Si single crystal with a mass of 5 kg, an enrichment greater than 0.9999 and of sufficient chemical purity. Then the paper describes the activities of a follow-up project, conducted by PTB, to produce a new generation of highly enriched silicon in order to demonstrate the quasi-industrial and reliable production of more than 12 kg of the 28Si material with enrichments of five nines. The intention of this project is also to show the availability of 28Si single crystals as a guarantee for the future realisation of the redefined kilogram |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 3.0 ; Creative Commons Attribution 3.0 License |
Zitierung
Abrosimov, N. V., Aref'ev, D. G., Becker, P., Bettin, H., Bulanov, A. D., Churbanov, M. F., Filimonov, V., Gavva, V. A., Godisov, O. N., Gusev, A. V., Kotereva, T., Nietzold, D., Peters, M., Potapov, A. M., Pohl, H.-J., Pramann, A., Riemann, H., Scheel, T., Stosch, R., Wundrack, S., & Zakel, S. (2017). A new generation of 99.999 % enriched ²⁸Si single crystals for the determination of Avogadro's constant. Metrologia, 54(4), 599–609. https://doi.org/10.1088/1681-7575/aa7a62