You have attempted to access the full-text of an Early Posting article. Access is available via an institutional subscription.
See the Early Posting FAQ page for additional information.
See the Early Posting FAQ page for additional information.
Realization of the Pascal based on Argon using a Fabry-Pérot refractometer
Optics Letters- received 03/11/2024; accepted 04/11/2024; posted 04/12/2024; Doc. ID 523293
- Abstract: Based on a recent experimental determination of the static polarizability and a first-principles calculation of the frequency-dependent dipole polarizability of argon, this work presents, by use of a Fabry-Pérot refractometer operated at 1550 nm, a realization of the SI unit of pressure, the pascal, for pressures up to 100 kPa, with an uncertainty of [(0.98 mPa)^2+(5.8x10 ^(−6)P)^2+(26×10^(−12)P^2)^2]^(1/2). The work also presents a value of the molar polarizability of N_2 at 1550 nm of 4.396572(26) × 10^-6 m^3/mol, which agrees well with previously determined ones in the literature.