121 citations · 485 across the 17 of their papers we have counts for
3 papers · 1 filter
Ultrastable low-noise current amplifier
Dietmar Drung, Christian Krause, Ulrich Becker +2
An ultrastable low-noise current amplifier (ULCA) is presented. The ULCA is a non-cryogenic instrument based on specially designed operational amplifiers and resistor networks. It…
Traceable precision pA direct current measurements with the ULCA
Hansjörg Scherer, Gerd-Dietmar Willenberg, Dietmar Drung +2
A standard method for picoammeter calibrations is the capacitor charging technique, which allows generating traceable currents in the sub-nA range. However, its accuracy is limited…
Traceable precision generation and measurement of pA direct currents
Hansjörg Scherer, Gerd-Dietmar Willenberg, Dietmar Drung +2
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 accura…