| Zugriffsnummer | 32254 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Traceable precision generation and measurement of pA direct currents |
| Autor(in); Institution |
Scherer, Hansjörg; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Willenberg, Gerd-Dietmar; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Drung, Dietmar; 7.2, Kryophysik und Spektrometrie, PTB-Berlin
Götz, Martin; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Pesel, Eckart; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
|
| Quelle/Jahr | 29th Conference on Precision Electromagnetic Measurements digest:(2014), 550 - 551 |
| Availability | [CD-ROM] ; file name: 275.pdf |
| ISBN | 978-1-4799-2478-3 (CD) ; 978-1-4799-2479-0 |
| Verlag | Piscataway, NJ: IEEE Operations Center |
| Konferenzangaben | Conference on Precision Electromagnetic Measurements (CPEM) 2014, Rio de Janeiro, 24-29, August, 2014, Brazil |
| Freie Schlagworte | Ammeters ; calibration ; current measurement ; measurement standards ; measurement uncertainty ; precision measurements |
| Zusammenfassung | We present the comparison of results from the generation and the measurement of direct currents in the pA range, performed with traceable state-of-the-art methods at highest accuracy. The currents were generated with the capacitor charging method, and measured with the first prototype of a novel picoammeter developed at PTB. The results confirm the agreement between both methods and the linearity of the new picoammeter at an uncertainty level of few μA/A. Also, they shed light on the ac-dc difference of capacitors, crucial for current generation with the capacitor charging method. |
