2015
DOI: 10.1088/0026-1394/52/5/s274
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A determination of the molar gas constantRby acoustic thermometry in helium

Abstract: We have determined the acoustic and microwave frequencies of a misaligned spherical resonator maintained near the temperature of the triple point of water and filled with helium with carefully characterized molar mass M = (4.002 6032 ± 0.000 0015) g mol

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Cited by 58 publications
(79 citation statements)
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“…The values and the rather large corresponding uncertainties displayed for these results in figure 2 should be considered provisional and are going to be significantly reduced when the calibration of the standard thermometers used in the experiments, which are currently ongoing, will be completed, providing a reliable linkage to ITS-90. -The AGT apparatus previously used at INRiM to achieve a precise determination of k [50], without any relevant modifications, operated in the temperature range between 235 K and 303 K, led to the measurements of (T − T 90 ) displayed in figure 2, using helium as the test gas [51].…”
Section: Discussion Of Recent Resultsmentioning
confidence: 99%
“…The values and the rather large corresponding uncertainties displayed for these results in figure 2 should be considered provisional and are going to be significantly reduced when the calibration of the standard thermometers used in the experiments, which are currently ongoing, will be completed, providing a reliable linkage to ITS-90. -The AGT apparatus previously used at INRiM to achieve a precise determination of k [50], without any relevant modifications, operated in the temperature range between 235 K and 303 K, led to the measurements of (T − T 90 ) displayed in figure 2, using helium as the test gas [51].…”
Section: Discussion Of Recent Resultsmentioning
confidence: 99%
“…(4). The fifth column of Table I contains the values of the jump coefficient ζ T that we extracted from the experimental data 9,10,1517,21,22 using the relation (13). …”
Section: Temperature Jump and Acoustic Resonancementioning
confidence: 99%
“…Among them are the recent low‐uncertainty determinations of Gavioso et al. at INRiM, of Gaiser et al. at PTB, of Qu et al.…”
Section: Experimental Values For the Boltzmann Constantmentioning
confidence: 99%