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pro vyhledávání: '"R. Dematteis"'
Akademický článek
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Publikováno v:
International Journal of Thermophysics. 43
A new zinc fixed-point cell for the dissemination of International Temperature Scale (ITS-90) was realized at the Italian National Metrological Institute (Istituto Nazionale di Ricerca Metrologica, INRiM). This paper presents the results of its chara
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de79bd62adc8311d311ce31923a3dc4a
https://doi.org/10.1007/s10765-022-03032-x
https://doi.org/10.1007/s10765-022-03032-x
Autor:
M. Bertinetti, D. Giraudi, A. Barbone, R. Dematteis, F. Bertiglia, G. Lopardo, Livio Gianfrani
We present an isothermal chamber designed and realized at the Italian Metrological Institute (INRiM) to stabilize the temperature of a quartz cell for Doppler-broadened precision spectroscopy of mercury atoms in the UV region for the practical realiz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d089918f9991e48146017ddb56ba1ce5
http://hdl.handle.net/11591/443747
http://hdl.handle.net/11591/443747
Corrigendum: Refractive index gas thermometry between 13.8 K and 161.4 K (2021 Metrologia 58 025008)
Autor:
D. Madonna Ripa, M. Fogliati, Peter P. M. Steur, M. Bertinetti, Giuseppina Lopardo, D. Imbraguglio, Christof Gaiser, D. Giraudi, R. Dematteis, Roberto Gavioso
Publikováno v:
Metrologia. 58:069501
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2d51b0b9e205a42bc1037375af4bb6b
https://doi.org/10.1088/1681-7575/ac2d9e
https://doi.org/10.1088/1681-7575/ac2d9e
Autor:
M. Fogliati, Roberto Gavioso, D. Giraudi, Christof Gaiser, D. Madonna Ripa, R. Dematteis, M. Bertinetti, Giuseppina Lopardo, Peter P. M. Steur, D. Imbraguglio
Publikováno v:
Metrologia. 58:025008
We have measured the refractive index of helium using a quasi-spherical copper microwave resonator at five different temperatures in the interval between the triple point of hydrogen at 13.8 K and the triple point of xenon at 161.4 K for pressures up
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb5a4af7db68441b851051c6a44f43cd
https://doi.org/10.1088/1681-7575/abe249
https://doi.org/10.1088/1681-7575/abe249
Autor:
D. Madonna Ripa, Cécile Guianvarc'H, Finlay M. Stuart, Peter P. M. Steur, Christof Gaiser, Roberto Gavioso, P Tarizzo, Daniel Truong, R. Dematteis
Publikováno v:
Metrologia. 52:S274-S304
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 g mol−1, with a relative stand
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe53f9ca7438f26fcac7212e473526f5
https://doi.org/10.1088/0026-1394/52/5/s274
https://doi.org/10.1088/0026-1394/52/5/s274
Autor:
P. P. M. Steur, R. Dematteis
Publikováno v:
International Journal of Thermophysics. 35:620-627
With a certain regularity, national metrology institutes conduct comparisons of water triple-point (WTP) cells. The WTP is the most important fixed point for the International Temperature Scale of 1990 (ITS-90). In such comparisons, it is common prac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc2ece8a7896c3fc32f5d16564c9b9b5
https://doi.org/10.1007/s10765-014-1634-0
https://doi.org/10.1007/s10765-014-1634-0
Publikováno v:
Metrologia. 56:045006
We report speed of sound measurements in helium at 273.16 K and at eight temperatures in the range between 236 K and 430 K. These results determine the difference (T − T 90) between the thermodynamic temperature T and its approximation T 90 by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c626d2253ed1e2f4c06bd29488acb0d
https://doi.org/10.1088/1681-7575/ab29a2
https://doi.org/10.1088/1681-7575/ab29a2
Autor:
P. P. M. Steur, R. Dematteis
Publikováno v:
International Journal of Thermophysics. 32:285-292
In 2009, most of the gallium fixed-point cells in use in different INRIM laboratories were compared with Italy’s national standard. The comparison has uncovered problems with one of the commercial devices, realizing a temperature about 0.7 mK too l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de86cb6f1031dbdcc2ec239c2a75af0d
https://doi.org/10.1007/s10765-011-0910-5
https://doi.org/10.1007/s10765-011-0910-5
Autor:
R. Dematteis, P. P. M. Steur
Publikováno v:
International Journal of Thermophysics. 32:303-308
Over the years some of the INRIM metal fixed-point cells, ≥20 years old, have shown a variable deterioration consisting in the leaking of some of the metal through the walls of the crucible. The variation in the deterioration is assumed to be conne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::418935bbe1d5581c5cbb6f7e5d1f4e19
https://doi.org/10.1007/s10765-011-0912-3
https://doi.org/10.1007/s10765-011-0912-3