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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 52, Iss. 4 — Apr. 1, 1962
  • pp: 447–451

Interferometric Wavelengths of Thorium Lines between 2650 A and 3400 A

A. DAVISON, A. GIACCHETTI, and R. W. STANLEY  »View Author Affiliations


JOSA, Vol. 52, Issue 4, pp. 447-451 (1962)
http://dx.doi.org/10.1364/JOSA.52.000447


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Abstract

Interferometric wavelengths, suitable for use as secondary standards of class “B”, are given for 68 thorium lines in the range 2650 to 3400 A, as emitted by a thorium-iodide electrodeless discharge tube without carrier gas. The rms deviation from the mean is 3 × 10-4 A. The method of preparation of a reliable and very intense thorium electrodeless tube is described.

Citation
A. DAVISON, A. GIACCHETTI, and R. W. STANLEY, "Interferometric Wavelengths of Thorium Lines between 2650 A and 3400 A," J. Opt. Soc. Am. 52, 447-451 (1962)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-52-4-447

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