Johnson noise thermometry measurement of the Boltzmann constant with a 200 Ω sense resistor

2012 ◽  
Author(s):  
A. Pollarolo ◽  
T. Jeong ◽  
S. P. Benz ◽  
H. Rogalla
Keyword(s):  
Boltzmann Constant ◽  
Johnson Noise ◽  
Noise Thermometry ◽  
Johnson Noise Thermometry

scholarly journals The NIST Johnson Noise Thermometry System for the Determination of the Boltzmann Constant

2017 ◽  
Vol 122 ◽  
Author(s):  
Nathan E. Flowers-Jacobs ◽  
Alessio Pollarolo ◽  
Kevin J. Coakley ◽  
Adam C. Weis ◽  
Anna E. Fox ◽  
...  
Keyword(s):  
International System ◽  
Standard Uncertainty ◽  
Boltzmann Constant ◽  
Correlated Noise ◽  
Johnson Noise ◽  
Noise Thermometry ◽  
Relative Standard ◽  
System Of Units ◽  
Johnson Noise Thermometry

In preparation for the redefinition of the International System of Units (SI), five different electronic measurements of the Boltzmann constant have been performed using different Johnson noise thermometry (JNT) systems over the past seven years. In this paper, we describe in detail the JNT system and uncertainty components associated with the most recent National Institute of Standards and Technology (NIST) determination of the Boltzmann constant: k = 1.380642 9(69) × 10−23 J/K, with a relative standard uncertainty of 5.0 × 10−6 and relative offset of −4.05 × 10−6 from the Committee on Data for Science and Technology (CODATA) 2014 recommended value. We discuss the input circuits and the approach we used to match the frequency response of two noise sources. We present new measurements of the correlated noise of the 4 K on-chip resistors in the quantum-accurate, pseudorandom, voltage-noise source, which we used to estimate the correlated, frequency-dependent, nonthermal noise in our system. Finally, we contrast our system with those used in other measurements and speculate on future improvements.

scholarly journals An improved electronic determination of the Boltzmann constant by Johnson noise thermometry

Metrologia ◽  
2017 ◽  
Vol 54 (4) ◽  
pp. 549-558 ◽  
Author(s):  
Jifeng Qu ◽  
Samuel P Benz ◽  
Kevin Coakley ◽  
Horst Rogalla ◽  
Weston L Tew ◽  
...  
Keyword(s):  
Boltzmann Constant ◽  
Johnson Noise ◽  
Noise Thermometry ◽  
Johnson Noise Thermometry

scholarly journals Improved electronic measurement of the Boltzmann constant by Johnson noise thermometry

Metrologia ◽  
2015 ◽  
Vol 52 (5) ◽  
pp. S242-S256 ◽  
Author(s):  
Jifeng Qu ◽  
Samuel P Benz ◽  
Alessio Pollarolo ◽  
Horst Rogalla ◽  
Weston L Tew ◽  
...  
Keyword(s):  
Boltzmann Constant ◽  
Johnson Noise ◽  
Noise Thermometry ◽  
Electronic Measurement ◽  
Johnson Noise Thermometry

Boltzmann Constant Measurements Using QVNS-Based Johnson Noise Thermometry at NMIJ, AIST

2014 ◽  
Vol 35 (6-7) ◽  
pp. 985-998 ◽  
Author(s):  
K. Yamazawa ◽  
C. Urano ◽  
T. Yamada ◽  
T. Horie ◽  
S. Yoshida ◽  
...  
Keyword(s):  
Boltzmann Constant ◽  
Johnson Noise ◽  
Noise Thermometry ◽  
Johnson Noise Thermometry

scholarly journals A Boltzmann constant determination based on Johnson noise thermometry

Metrologia ◽  
2017 ◽  
Vol 54 (5) ◽  
pp. 730-737 ◽  
Author(s):  
N E Flowers-Jacobs ◽  
A Pollarolo ◽  
K J Coakley ◽  
A E Fox ◽  
H Rogalla ◽  
...  
Keyword(s):  
Boltzmann Constant ◽  
Johnson Noise ◽  
Noise Thermometry ◽  
Constant Determination ◽  
Johnson Noise Thermometry
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