Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Improved spectra aberration in the Johnson Noise Thermometry

Published

Author(s)

Alessio Pollarolo, Horst Rogalla, Anna Fox, Kevin J. Coakley, Weston L. Tew, Samuel P. Benz

Abstract

SPECTRAL ABERRATION HAS BEEN FOR A LONG TIME THE MAIN SOURCE OF UNCERTAINTY IN THE JOHNSON NOISE THERMOMETRY APPROACH TO MEASURING THE BOLTZMANN CONSTANT. RECENTLY, WITH NEWLY DEVELOPED HARDWARE AND THE INTRODUCTION OF A NOVEL FITTING ALGORITHM FOR ANALYZING THE DATA, WE HAVE ACHIEVED A FREQUENCY INDEPENDENT SPECTRAL ABERRATION FOR MEASUREMENTS WITH THE NIST JNT SYSTEM. CONSEQUENTLY, WE PERFORMED A DATA DRIFT ANALYSIS AND AN ELECTROMAGNETIC INTERFERENCE INVESTIGATION TO EXPLAIN A RESIDUAL OFFSET THAT AFFECTS THE BOLTZMANN CONSTANT
Proceedings Title
Conference on Precision Electromagnetic Measurements
Conference Dates
July 10-15, 2016
Conference Location
Ottawa, CA

Keywords

Boltzmann equation, Josephson junction, measurement units, noise measurement, standards, temperature measurement

Citation

Pollarolo, A. , Rogalla, H. , Fox, A. , Coakley, K. , Tew, W. and Benz, S. (2016), Improved spectra aberration in the Johnson Noise Thermometry, Conference on Precision Electromagnetic Measurements, Ottawa, CA, [online], https://doi.org/10.1109/CPEM.2016.7540777, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=920072 (Accessed April 23, 2024)
Created July 9, 2016, Updated April 4, 2022