| Zugriffsnummer | 23690 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Realizing the farad from two ac quantum Hall resistances |
| Autor(in); Institution |
Schurr, Jürgen; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Bürkel, Veit; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Kibble, Bryan; guest scientist, Hampton, Middlesex, UK
|
| Quelle/Jahr | Metrologia: 46 (2009), 6, 619 - 628 |
| ISSN | 0026-1394 |
| DOI | |
| URL | |
| Verlag | Bristol: IOP [u.a.] |
| Zusammenfassung | Since the quantum Hall resistance measured with ac has reached the state of an excellent quantum standard of impedance, we have realized a quadrature bridge with two ac quantum Hall resistances to accurately calibrate capacitance standards in terms of the SI value of the von-Klitzing constant, without the need for any calculable artefact. The advantages of the realized measuring chain, experimental tests of the coaxial ac bridges involved, and the achieved relative uncertainty of 6 × 10-9 (k=1) are discussed. |
