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physics.ins-det2020★ 2 cited
From Counting Electrons to Calibrating Ammeters: Improved Methodologies for Traceable Measurements of Small Electric Currents
Stephen Giblin, Jordan Tompkins
New technology, the ultrastable low-noise current amplifier and the electron pump, provide new methods for making traceable measurements of small DC electric currents. We review fo…
physics.ins-det2018★ 12 cited
Inter-laboratory nanoamp current comparison with sub-part-per-million uncertainty
Stephen Giblin, Dietmar Drung, Martin Goetz +1
An ultrastable low-noise current amplifier (ULCA) has been transferred between two laboratories, NPL and PTB, four times, with three of the transfers yielding a relative change in…