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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 42, Iss. 5 — May. 1, 1952
  • pp: 300–305

The First Spark Spectrum of Manganese (Mn II)

C. W. CURTIS  »View Author Affiliations

JOSA, Vol. 42, Issue 5, pp. 300-305 (1952)

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The analysis of the Mn II spectrum has been extended by the classification of approximately 600 additional lines. Most of the newly identified terms belong to the triplet system, for which no levels have previously been located. Intersystem lines have been found which fix the relative positions of the septet, quintet, and triplet systems and all terms of these systems to be expected within 40,000 wave numbers of the ground state have been established. No singlet levels have as yet been located.

C. W. CURTIS, "The First Spark Spectrum of Manganese (Mn II)," J. Opt. Soc. Am. 42, 300-305 (1952)

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  1. C. W. Curtis, Phys. Rev. 53, 474 (1938).
  2. The symbols used to designate particular terms are given in Table I or in reference of footnote 1.
  3. Unpublished measurements furnished by M. A. Catalán.
  4. C. C. Kiess, Bur. Standards J. Research 5, 775 (1930) and 15, 79 (1935).
  5. B. Edlen and P. Swings, Astrophys. J. 95, 532 (1942).
  6. Shenstone, Phil. Trans. Roy. Soc. 235, 195 (1936).
  7. R. E. Trees, Phys. Rev. 83, 756 (1951).

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