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Publication Citation: Johnson Noise Thermometry Measurement of the Boltzmann Constant with a 200 Ohm Sense Resistor

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Author(s): Alessio Pollarolo; Tae H. Jeong; Samuel P. Benz; Horst Rogalla;
Title: Johnson Noise Thermometry Measurement of the Boltzmann Constant with a 200 Ohm Sense Resistor
Published: July 01, 2012
Abstract: In 2010 NIST measured the Boltzmann constant k by use of an electronic technique that measured the Johnson noise of a 100 Ohm resistor at the triple point of water (TPW). The NIST Johnson noise thermometry (JNT) system used as a reference a voltage waveform that was synthesized with a quantum voltage noise source (QVNS) that consisted of pulse-driven arrays of Josephson-junctions. In this paper, we attempt to reproduce the previous measurement of k by repeating the JNT measurement with a 200 Ohm sense resistor and appropriately modified QVNS circuit and waveform. Preliminary results show agreement with the previous value within the measurement uncertainty.
Conference: Conference on Precision Electromagnetic Measurements
Proceedings: Conference on Precision Electromagnetic Measurements Conference Digest
Volume: 28
Pages: pp. 214 - 215
Location: National Harbor, MD
Dates: July 1-6, 2012
Keywords: Boltzmann equation; Correlation; Digital-analog conversion; Josephson arrays; Measurement units; Noise Measurement; Quantization; Signal synthesis; Standards; Temperature.
Research Areas: Instrumentation, Johnson Noise Thermometry, Quantum Devices, Thermometry, Quantum Electrical Measurements, Measurements
DOI: http://dx.doi.org/10.1109/CPEM.2012.6250878  (Note: May link to a non-U.S. Government webpage)
PDF version: PDF Document Click here to retrieve PDF version of paper (2MB)