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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 61, Iss. 6 — Jun. 1, 1971
  • pp: 704–726

Preliminary Level Analysis of the First and Second Spectra of Dysprosium, Dy I and Dy II

JOHN G. CONWAY and EARL F. WORDEN  »View Author Affiliations


JOSA, Vol. 61, Issue 6, pp. 704-726 (1971)
http://dx.doi.org/10.1364/JOSA.61.000704


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Abstract

Accurate wavelengths and wavenumbers of over 22 000 dysprosium lines have been measured in the wavelength region 2300-11 400 Å. The Zeeman effect has been observed at a field strength of 24000 G from 2300 to 9000 Å. By comparison of relative intensities of the lines from sources under various conditions, 85% of the lines have been assigned as Dy I or Dy II spectrum lines. From the energy-level analysis, 141 even and 197 odd levels of Dy I are known. Combinations between these levels account for 1952 lines. For Dy II, 14 even and 214 odd levels are known, with 1000 lines classified. The ground levels of Dy I and Dy II are 4ƒ106s25I8 and 4ƒ106s6I8½, respectively. The lowest level of the 4ƒ95d6s2 configuration of Dy I lies 7565.62 cm-1 above the ground level. The g values for most of the levels of both spectra are given.

Citation
JOHN G. CONWAY and EARL F. WORDEN, "Preliminary Level Analysis of the First and Second Spectra of Dysprosium, Dy I and Dy II," J. Opt. Soc. Am. 61, 704-726 (1971)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-61-6-704

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