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

fYear

2012

fDate

1-6 July 2012

Firstpage

48

Lastpage

49

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM), 2012 Conference on

Conference_Location

Washington, DC

ISSN

0589-1485

Print_ISBN

978-1-4673-0439-9

Type

conf

DOI

10.1109/CPEM.2012.6250654

Filename

6250654