Détermination expérimentale des coefficients du viriel de la réfractivité des gaz : étude de l'argon

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Abstract
A spherical Fabry Perot interferometer is used to determine the refractive index of argon to a few hundred bars, with a better accuracy than those obtained in preceding experiments.The first and second refractivity virial coefficients have been determined. Measurements have been made for eight wavelengths in the visible spectrum between 4359 and 6329 Å. A value of the third coefficient is given for the first time.Comparisons are made with preceding published values, and with values of dielectric virial coefficients.

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