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Publication Citation: Optimizing Acoustic Measurements of the Boltzmann Constant

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Author(s): Michael R. Moldover;
Title: Optimizing Acoustic Measurements of the Boltzmann Constant
Published: November 22, 2009
Abstract: We review the progress in acoustic metrology of gases that has occurred since the 1988 measurement of the universal gas constant R using a spherical acoustic resonator. The advances in understanding resonators and in calculating the thermophysical properties of helium ab intio suggest that today one could determine Boltzmann's constant kB from acoustic measurements using either helium or argon with a relative uncertainty less that 10-6.
Citation: Comptes Rendus De L Academie Des Sciences Serie II Fascicule B-Mecanique Physique Astronomie
Volume: 10
Pages: pp. 815 - 827
Keywords: acoustics, acoustic resonators, acoustic thermometry, Boltzmann constant, fundamental constants, resonators, speed of sound, thermometry
Research Areas: Measurement Standards, Gas Metrology, SI (Thermodynamics Units), Standards, Chemical Engineering & Processing, Thermometry, Chemistry, Thermodynamics, Thermophysics
PDF version: PDF Document Click here to retrieve PDF version of paper (306KB)