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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 58, Iss. 9 — Sep. 1, 1968
  • pp: 1195–1195

Present State of Analysis of the First Spectrum of Thorium (Th I)

ROMUALD ZALUBAS  »View Author Affiliations


JOSA, Vol. 58, Issue 9, pp. 1195-1195 (1968)
http://dx.doi.org/10.1364/JOSA.58.001195


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Abstract

To date 268 even and 255 odd atomic energy levels in Th I have been found. The lowest level of the configuration 5<i>f</i> 6<i>d</i> 7<i>s</i><sup>2</sup> is <sup>3</sup><i>H</i><sub>4</sub><sup>0</sup> and lies 7795.27 cm<sup>-1</sup> above the ground level <sup>3</sup><i>F</i><sub>2</sub> of 6<i>d</i><sup>2</sup> 7<i>s</i><sup>2</sup>, Some levels of 5<i>f</i> 6<i>d</i><sup>2</sup> 7<i>s</i> and 6<i>d</i><sup>2</sup> 7<i>s</i> 7<i>p</i> are identified.

Citation
ROMUALD ZALUBAS, "Present State of Analysis of the First Spectrum of Thorium (Th I)," J. Opt. Soc. Am. 58, 1195-1195 (1968)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-58-9-1195


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References

  1. R. Zalubas, New Description of Thorium Spectra, Natl. Bur. Std. (U. S.) Monograph 17 (U. S. Government Printing Office, Washington, D. C., 1960).
  2. J. Sugar, J. Opt. Soc. Am. 53, 831 (1963).
  3. A. Giacchetti, Averages of Interferometric Measurements of Thorium Lines, ANL-7209, Argonne National Laboratory (1966).
  4. M. L. Kuder, J. Res. Natl. Bur. Std. (U. S.) 65C, 1 (1961).
  5. R. Zalubas, J. Res. Natl. Bur. Std. (U. S.) 63A, 275 (1959).
  6. Ph. Schuurmans, dissertation, Amsterdam (1946).
  7. R. Zalubas, Abstract, Spectroscopy Symposium at Natl. Bur. Std. (U. S.) (U. S. Govt. Printing Office, Washington, D. C., 1967).
  8. J. L. Tech, private communication (1967).
  9. R. E. Trees, Physica 26, 353 (1960).
  10. W. C. Martin, J. Opt. Soc. Am. 53, 1047 (1963).
  11. (a) G. Racah, Physica 16, 651 (1950); (b) P. F. A. Klinkenberg, Physica 16, 618 (1950).
  12. E. B. M. Steers, Spectrochim. Acta 23B, 1365 (197).

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