Determination of the Boltzmann constant with cylindrical acoustic gas thermometry: new and previous results combined.
Sign Up to like & getrecommendations! Published in 2017 at "Metrologia"
DOI: 10.1088/1681-7575/aa7b4a
Abstract: We report a new determination of the Boltzmann constant kB using a cylindrical acoustic gas thermometer. We determined the length of the copper cavity from measurements of its microwave resonance frequencies. This contrasts with our… read more here.
Keywords: acoustic gas; previous results; gas; determination boltzmann ... See more keywords
Generating an Adjustable Focused Field With an Annular Shape Using a Cylindrical Acoustic Transducer Array
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"
DOI: 10.1109/tuffc.2019.2943345
Abstract: We present the focusing structure of a cylindrical acoustic transducer array consisting of many annular piezoelectric wafer elements operating in the radial vibration mode. Using Huygens’ principle, we calculated the delay parameters associated with the… read more here.
Keywords: transducer; array; field; cylindrical acoustic ... See more keywords