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Refractivities of H2, He, O2, CO, and Kr for 168-288 nm wavelength rangePrecision 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%.
Document ID
19760044096
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Smith, P. L.
(Eidgenoessische Technische Hochschule Zurich, Switzerland)
Parkinson, W. H.
(Harvard College Observatory and Smithsonian Astrophysical Observatory Cambridge, Mass., United States)
Huber, M. C. E.
(Eidgenoessische Technische Hochschule, Zurich, Switzerland; Harvard College Observatory and Smithsonian Astrophysical Observatory, Cambridge Mass., United States)
Date Acquired
August 8, 2013
Publication Date
April 1, 1976
Publication Information
Publication: Physical Review A - General Physics
Subject Category
Optics
Accession Number
76A27062
Funding Number(s)
CONTRACT_GRANT: NGL-22-007-006
Distribution Limits
Public
Copyright
Other

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