Refractivities of H2, He, O2, CO, and Kr for 168-288 nm wavelength range

Details Refractivities of H2, He, O2, CO, and Kr for 168-288 nm wavelength range Refractivities of H2, He, O2, CO, and Kr for 168-288 nm wavelength range

Apr 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976phrva..13.1422s&link_type=abstract

Physical Review A - General Physics, 3rd Series, vol. 13, Apr. 1976, p. 1422-1434. Research supported by Airco, Inc.;

Physics

General Physics

22

Molecular Gases, Monatomic Gases, Refractivity, Ultraviolet Radiation, Carbon Monoxide, Diffraction Patterns, Helium, Hydrogen, Krypton, Oxygen, Tables (Data), Ultraviolet Absorption, Ultraviolet Reflection

Scientific paper

Precision measurements of the refractivities of H2, He, O2, CO, and Kr were made in the wavelength range 168-288 nm. By using a 1.2-m-long test cell and by keeping the test gas at accurately determined conditions near atmospheric pressure and room temperature, accuracies (90% confidence limit) were achieved for the absolute refractivities that ranged from plus or minus 0.1% to plus or minus 1.0% depending upon the gas and wavelength range. For a given gas, the ratio of refractivities at any two wavelengths has a smaller uncertainty. For H2, CO, and O2, results are for wavelengths shorter than those of previous measurements and, for He and Kr, the uncertainties are less than those of other measurements. For He refractivities agree with the theoretical ones, but in the case of H2 results are about 1% larger than the theoretical values. At the upper end of the wavelength range studied, the data are in agreement with previous measurements on H2, CO, and Kr. For O2 results indicate that the hitherto available data are too large by amounts ranging from 0.8% to 10%.

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