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EnglishThe paper describes an optical interferometer realized at INRiM, which works as pressure standard based on a well-known phenomenon of light-matter interaction: the dependence of refractive index with pressure (density) of a gas. The realization of a pressure standard via optical method requires a combined approach of high accurate refractive index measurements (sub-nanometer and sub-millikelvin metrology) with ab-initio quantum calculation of molar refractivity, paving the way for a quantum-based standard. The paper reports recent development concerning a new layout of the system, currently focused to improve the temperature measurement and stability. The developed system is a preliminary achievement towards a quantum-based pressure standard in the range between 100 Pa and 150 kPa.
An optical interferometer for pressure measurement / Mari, D; Pisani, M; Zucco, M. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 1065(2018), p. 162007. [10.1088/1742-6596/1065/16/162007]
| Titolo: | An optical interferometer for pressure measurement | |
| Autori: | ||
| Data di pubblicazione: | 2018 | |
| Rivista: | JOURNAL OF PHYSICS. CONFERENCE SERIES | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1088/1742-6596/1065/16/162007 | |
| Abstract: | The paper describes an optical interferometer realized at INRiM, which works as pressure standard... based on a well-known phenomenon of light-matter interaction: the dependence of refractive index with pressure (density) of a gas. The realization of a pressure standard via optical method requires a combined approach of high accurate refractive index measurements (sub-nanometer and sub-millikelvin metrology) with ab-initio quantum calculation of molar refractivity, paving the way for a quantum-based standard. The paper reports recent development concerning a new layout of the system, currently focused to improve the temperature measurement and stability. The developed system is a preliminary achievement towards a quantum-based pressure standard in the range between 100 Pa and 150 kPa. | |
| Full-text (pubblici): | open | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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