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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 70, Iss. 11 — Nov. 1, 1980
  • pp: 1372–1375

Oscillator strengths of neutral yttrium (Y I) from hook-method measurements in a furnace

Bartley L. Cardon, W. H. Parkinson, and F. S. Tomkins  »View Author Affiliations

JOSA, Vol. 70, Issue 11, pp. 1372-1375 (1980)

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Relative oscillator strengths for 33 neutral yttrium (Y I) transitions between 2723 and 4761 Å have been measured by the hook method. The data have been analyzed and placed on an absolute scale by using a numerical procedure developed by Cardon, Smith, and Whaling and the published absolute lifetimes of Beer, and Andersen, Ramanujam, and Bahr. The z2F°5/2 level lifetime of Beer is found to be in error. The absolute lifetime of the level y2P°3/2 is determined to be 36 ± 4 ns. The total uncertainties in the absolute oscillator strengths are between 9% and 14%.

© 1980 Optical Society of America

Bartley L. Cardon, W. H. Parkinson, and F. S. Tomkins, "Oscillator strengths of neutral yttrium (Y I) from hook-method measurements in a furnace," J. Opt. Soc. Am. 70, 1372-1375 (1980)

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  1. B. L. Cardon, P. L. Smith, and W. Whaling, "New method for determining relative oscillator strengths of atoms through combined absorption and emission measurements: Applications to titanium (TiI)," Phys. Rev. A 20, 2411–2419 (1979).
  2. M. C. E. Huber and W. H. Parkinson, "Fe I oscillator strengths determined from anomalous dispersion of shock-heated gases," Astrophys. J. 172, 229–247 (1972).
  3. M. C. E. Huber, "Interferometric gas diagnostics by the hook method," Modern Optical Methods in Gas Dynamic Research, edited by D. S. Dosanjh (Plenum, New York, 1971), pp. 85–112.
  4. W. H. Parkinson, E. M. Reeves, and F. S. Tomkins, "Neutral calcium, strontium, and barium: Determination of ƒ-values of the principal series by hook method," J. Phys. B 9, 157–165 (1976).
  5. M. C. E. Huber and R. J. Sandeman, "Oscillator Strengths of Cr I Lines Lying Between 200 and 541 nm from Hook-Method and Absorption Measurements in a Furnace," Proc. R. Soc. London Ser. A 357, 335–379 (1977).
  6. H. Beer, "Lebensdauer und Hyperfeinstrukturaufspaltung der Terme 4d5s5p y2D3/2,5/2 und 4d5s5p y2F5/2,7/2 in Yttrium I Spektrum," Ann. Phys. (Leipzig) 7, 110–118 (1971).
  7. T. Andersen, P. S. Ramanujam, and K. Bahr, "Lifetimes of Excited States in Y I, Y II, and Zr I by Beam-Foil and Beam-Sputtering Excitation," Astrophys. J. 223, 344–349 (1978).
  8. C. H. Corliss and W,R. Bozman, "Experimental Transition Probabilities for Spectral Lines of Seventy Elements," NBS Monograph 53, (USGPO, Washington, D.C., 1962).
  9. dex = interval in powers of 10.

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