Systematic Error Resolved in NIST Johnson Noise Thermometer
Alessio Pollarolo, Weston L. Tew, Horst Rogalla, Samuel P. Benz
In the Johnson Noise Thermometry approach, Boltzmanns constant k is obtained as the ratio of the noise power measured across a sense resistor at the triple point of water and the noise power measured for a synthesized reference waveform. The reference waveform is synthesized by an array of Josephson junctions. In this paper, we show how an unwanted offset in the constant term of the two parameter nist-equation used to fit the noise power ratio produced a systematic error in our measured value of k.
Conference on Precision Electromagnetic Measurements Conference Digest
August 24-29, 2014
Rio de Janeiro, -1
Conference on Precision Electromagnetic Measurements