NDLI: Measurement of the Boltzmann Constant k $_{B}$ Using a Quasi-Spherical Acoustic Resonator

Content Provider	Springer Nature Link
Author	Pitre, Laurent Sparasci, Fernando Truong, Daniel Guillou, Arnaud Risegari, Lara Himbert, Marc E.
Copyright Year	2011
Abstract	There is currently great interest in the international metrological community for new accurate determinations of the Boltzmann constant k $_{B}$, with the prospect of a new definition of the unit of thermodynamic temperature, the kelvin. In fact, k $_{B}$ relates the unit of energy (the joule) to the unit of the thermodynamic temperature (the kelvin). One of the most accurate ways to access the value of the Boltzmann constant is from measurements of the velocity of the sound in a noble gas. In the method described here, the experimental determination has been performed in a closed quasi-spherical cavity. To improve the accuracy, all the parameters in the experiment (purity of the gas, static pressure, temperature, exact shape of the cavity monitored by EM microwaves, etc.) have to be carefully controlled. Correction terms have been computed using carefully validated theoretical models, and applied to the acoustic and microwave signals. We report on two sets of isothermal acoustic measurements yielding the value k $_{B}$ = 1.380 647 74(171) × 10$^{−23}$ J · K$^{−1}$ with a relative standard uncertainty of 1.24 parts in 10$^{6}$. This value lies 1.9 parts in 10$^{6}$ below the 2006 CODATA value (Mohr et al., Rev. Mod. Phys. 80, 633 (2008)), but, according to the uncertainties, remains consistent with it.
Starting Page	1825
Ending Page	1886
Page Count	62
File Format	PDF
ISSN	0195928X
Journal	International Journal of Thermophysics
Volume Number	32
Issue Number	9
e-ISSN	15729567
Language	English
Publisher	Springer US
Publisher Date	2011-07-13
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Acoustic resonance Boltzmann constant Definition of the kelvin Metrology Microwave resonance Quasi-sphere System of units Thermometry Triaxial ellipsoid Unit of temperature Physical Chemistry Mechanics Condensed Matter Physics Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Acoustic Resonator Experiments at the Triple Point of Water: First Results for the Boltzmann Constant and Remaining Challenges

Progress in INRiM Experiment for the Determination of the Boltzmann Constant with a Quasi-spherical Resonator

Acoustic Eigenvalues of Quasispherical Resonators: Beyond the Triaxial Ellipsoid Approximation

Measurement of the Boltzmann Constant k B Using a Quasi-Spherical Acoustic Resonator

Improved apparatus to determine the Boltzmann constant using a large quasi-spherical acoustic resonator

Preparative Steps Towards the New Definition of the Kelvin in Terms of the Boltzmann Constant

Construction and Start-up of a Large-Volume Thermostat for Dielectric-Constant Gas Thermometry

Progress Toward Redetermining the Boltzmann Constant with a Fixed-Path-Length Cylindrical Resonator

Progress Towards an Acoustic/Microwave Determination of the Boltzmann Constant at LNE-INM/CNAM

Measurement of the Boltzmann Constant k $_{B}$ Using a Quasi-Spherical Acoustic Resonator

Similar Documents

Acoustic Resonator Experiments at the Triple Point of Water: First Results for the Boltzmann Constant and Remaining Challenges

Progress in INRiM Experiment for the Determination of the Boltzmann Constant with a Quasi-spherical Resonator

Acoustic Eigenvalues of Quasispherical Resonators: Beyond the Triaxial Ellipsoid Approximation

Measurement of the Boltzmann Constant k B Using a Quasi-Spherical Acoustic Resonator

Improved apparatus to determine the Boltzmann constant using a large quasi-spherical acoustic resonator

Preparative Steps Towards the New Definition of the Kelvin in Terms of the Boltzmann Constant

Construction and Start-up of a Large-Volume Thermostat for Dielectric-Constant Gas Thermometry

Progress Toward Redetermining the Boltzmann Constant with a Fixed-Path-Length Cylindrical Resonator

Progress Towards an Acoustic/Microwave Determination of the Boltzmann Constant at LNE-INM/CNAM

Measurement of the Boltzmann Constant k $_{B}$ Using a Quasi-Spherical Acoustic Resonator