Realization of the pascal based on argon using a Fabry-Perot refractometer

Based on a recent experimental determination of the static polarizability and a first -principle calculation of the frequency -dependent dipole polarizability of argon, this work presents, by using a Fabry-Perot 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 [(1.0 mPa) 2 + (5.8 x 10 - 6 P ) 2 + (26 x 10 - 12 P 2 ) 2 ] 1 / 2 . The work also presents a value of the molar polarizability of N 2 at 1550 nm and 302.9146 K of 4.396572(26) x 10 - 6 m 3 /mol, which agrees well with previously determined ones.