| Zugriffsnummer | 44256 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | The next generation of current measurement for ionization chambers |
| Autor(in); Institution |
Fitzgerald, Ryan; National Institute of Standards and Technology (NIST), Physics Measurements Laboratory, Gaitersburg, MD, USA
Bergeron, Denis E.; National Institute of Standards and Technology (NIST), Physics Measurements Laboratory, Gaitersburg, MD, USA
Giblin, Stephen P.; National Physical Laboratory (NPL), Teddington, UK
Jarrett, Dean G.; National Institute of Standards and Technology (NIST), Physics Measurements Laboratory, Gaitersburg, MD, USA
Judge, Steven M.; Bureau International des Poids et Mesures (BIPM), Pavillon de Breteuil, S`evres Cedex, FRANCE
Michotte, Carin; Bureau International des Poids et Mesures (BIPM), Pavillon de Breteuil, S`evres Cedex, FRANCE
Scherer, Hansjörg; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Zimmermann, Neil M.; National Institute of Standards and Technology (NIST), Physics Measurements Laboratory, Gaitersburg, MD, USA
|
| Quelle/Jahr | Applied Radiation and Isotopes: 163 (2020) |
| Artikelnummer | 109216 |
| ISSN | 0969-8043 (PRINT) ; 1872-9800 (ONLINE) |
| DOI | |
| Verlag | Amsterdam: Elsevier |
| Konferenzangaben | 22nd International Conference on Radionuclide Metrology and its Applications, Salamanca, 27-31, May, 2019, Spain |
| Freie Schlagworte | Ionization chambers ; Current measurement ; Small currents ; Gamma-ray |
| Zusammenfassung | Re-entrant ionization chambers (ICs) are essential to radionuclide metrology and nuclear medicine for maintaining standards and measuring half-lives. The requirements of top-level metrology demand that systems must be precise and stable to 0.1% over many years, and linear from 10-14 A to 10-8 A. Thus, laboratories depend on bespoke current measurement systems and often rely on sealed sources to generate reference currents. To maintain and improve present capabilities, metrologists need to overcome two looming challenges: ageing electronics and decreasing availability of sealed sources. Possible solutions using Ultrastable Low-Noise Current Amplifiers (ULCAs), resistive-feedback electrometers, and (quantum) single-electron pumps are reviewed. Broader discussions of IC design and methodology are discussed. ULCAs show promise and resistive-feedback systems which take advantage of standard resistor calibrations offer an alternative. |
| Themenbereich der Metrologie | Ionisierende Strahlung |
| Forschungsprojekt | 15SIB08: e-SI-Amp: Quantum realisation of the SI ampere |
| Förderinformationen (1) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: EMPIR 2015 SI Broader Scope Titel der Förderung: 15SIB08: e-SI-Amp: Quantum realisation of the SI ampere Förderungsnummer: 15SIB08 URI der Förderung: http://www.e-si-amp.eu/ |
Zitierung
Fitzgerald, R., Bergeron, D. E., Giblin, S. P., Jarrett, D. G., Judge, S. M., Michotte, C., Scherer, H., & Zimmermann, N. M. (2020). The next generation of current measurement for ionization chambers. Applied Radiation and Isotopes, 163. https://doi.org/10.1016/j.apradiso.2020.109216