Title :
Development of thermodynamic temperature measurement technique based on quantum standards at NMIJ/AIST
Author :
Urano, Chiharu ; Fukuyama, Yasuhiro ; Kaneko, Nobu-hisa ; Maruyama, Michitaka ; Oe, Takehiko ; Domae, Atsushi ; Yamazawa, Kazuaki ; Tamba, Jun ; Yamamori, Hirotake ; Kiryu, Shogo
Author_Institution :
Nat. Metrol. Inst. of Japan, AIST, Tsukuba, Japan
Abstract :
We have started development of a thermodynamic temperature measurement system based on Johnson-Nyquist equation. In this measurement power spectrum density of a resistor is measured using electrical quantum standards as references. This thermometer will play an important role in determination of the Boltzmann constant, comparison between thermodynamic temperature and definitions in International Temperature Scale of 1990, and measurement of arbitrary temperature in a wide temperature range.
Keywords :
constants; measurement standards; resistors; temperature measurement; thermal noise; thermometers; Boltzmann constant; Johnson-Nyquist equation; electrical quantum standard; international temperature scale; measurement power spectrum density; resistor; thermodynamic temperature measurement; thermometer; Josephson junctions; Noise; Resistors; Temperature distribution; Temperature measurement; Thermodynamics; Transmission line measurements; Boltzmann constant; Johnson noise; Josephson arrays; Measurement unit; Standards; Superconductor-normal-superconductor devices; Temperature;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250654
