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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 53, Iss. 11 — Nov. 1, 1963
  • pp: 1250–1252

Wavelength Passed by Hg198 Zeeman-Split Absorption Filter

WALTER G. SCHWEITZER, JR.  »View Author Affiliations

JOSA, Vol. 53, Issue 11, pp. 1250-1252 (1963)

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We have measured the vacuum wavelength of the 2537-Å line of Hg198 as passed by a Zeeman-split absorption filter. The 6057-Å line of Kr86 was used as a standard. An evacuated Fabry-Perot interferometer was employed with spacers of 218-, 110-, and 21-mm length. The linewidth obtained by using the Zeeman filter is estimated to be about 5 mK. The measured wavelength 2537.26874±0.00003 Å is in excellent agreement with the value obtained by Barger and Kessler for the wavelength emitted by an atomic beam of Hg198.

WALTER G. SCHWEITZER, JR., "Wavelength Passed by Hg198 Zeeman-Split Absorption Filter," J. Opt. Soc. Am. 53, 1250-1252 (1963)

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  1. K. G. Kessler and V. G. Schweitzer, Jr., J. Opt. Soc. Am. 49, 199 (1959).
  2. K. G. Kessler, R. L. Barger, and W. G. Schweitzer, Jr., "Mercury Atomic Beams for Metrology," in Symposium No. 11 Interferometry (Her Majesty's Stationery Office, London, 1960), p. 67.
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  8. E. Englehard and J. Terrien, Rev. Opt. 39, 11 (1960).
  9. R. L. Barger and K. G. Kessler, J. Opt. Soc. Am. 51, 827 (1961).
  10. W. G. Schweitzer, Jr., and K. G. Kessler (to be published).

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