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Reference Lines in the Optogalvanic Spectra of Uranium and Thorium Over the Wavelength Range 694-755 nm

Published

Author(s)

W DeGraffenreid, Craig J. Sansonetti

Abstract

The optogalvanic spectra of uranium and thorium are convenient sources of lines to calibrate wavemeters for high resolution laser spectroscopy. Hollow-cathode lamps for both uranium and thorium are used to observe the spectra using a single-frequency cw dye laser operating over the wavelength range 694-755 nm. Eight uranium and seven thorium lines are measured with an accuracy of a few parts in 10^B with our Fabry-Perot wavemeter. The estimated uncertainty of the measurements is 0.0002 cm^(-1) for both species. The results are compared to several previous measurements of these lines and are found to be in good agreement with values determined by Fourier Transform Spectroscopy.
Citation
Journal of the Optical Society of America B-Optical Physics
Volume
19
Issue
No. 7

Keywords

frequency standards, optogalvanic spectroscopy, thorium, uranium, wavelength standards

Citation

DeGraffenreid, W. and Sansonetti, C. (2002), Reference Lines in the Optogalvanic Spectra of Uranium and Thorium Over the Wavelength Range 694-755 nm, Journal of the Optical Society of America B-Optical Physics (Accessed April 18, 2024)
Created June 30, 2002, Updated October 12, 2021