| Autor: |
Gavioso, R., Benedetto, G., Madonna Ripa, D., Giuliano Albo, P., Guianvarc'h, C., Merlone, A., Pitre, L., Truong, D., Moro, F., Cuccaro, R. |
| Předmět: |
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| Zdroj: |
International Journal of Thermophysics; Jul2011, Vol. 32 Issue 7/8, p1339-1354, 16p |
| Abstrakt: |
Current progress in the INRiM experiment for the determination of the Boltzmann constant k by means of acoustic thermometry is reported. Particularly, the microwave determination of the volume of a triaxial ellipsoidal resonator with an inner radius of 5 cm which was designed at LNE-CNAM is discussed. For the same cavity, acoustic measurements in helium at T over the extended pressure range between 50 kPa and 1.4 MPa are reported and these results are compared with the predictions of a model which accounts for several perturbing effects. The procedures, methods, and results obtained in the calibration of several capsule-type SPRTs used in the experiment are briefly illustrated, together with the estimate of the temperature uniformity of the experiment. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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