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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 1, Iss. 2 — Apr. 1, 1984
  • pp: 311–313

Hyperfine structure and the broadening of sunspot spectral lines

R. H. Garstang  »View Author Affiliations


JOSA B, Vol. 1, Issue 2, pp. 311-313 (1984)
http://dx.doi.org/10.1364/JOSAB.1.000311


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Abstract

The combined effects of hyperfine structure and Zeeman splitting have been calculated for the a6D1/2z6D1/2 line of Mn i at wavelength 4070.28 Å, which is observed as a broad line in sunspot spectra. An effective Z factor is defined to represent the mean position of the strong components of the line for fields above 500 G. This Z factor might provide a method of monitoring sunspot magnetic fields.

© 1984 Optical Society of America

Citation
R. H. Garstang, "Hyperfine structure and the broadening of sunspot spectral lines," J. Opt. Soc. Am. B 1, 311-313 (1984)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-1-2-311


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References

  1. J. G. Timothy, Department of Astrophysical, Planetary, and Atmospheric Sciences, University of Colorado, Boulder, Colorado 80309 (personal communication).
  2. J. W. Harvey, A Photographic Spectral Atlas of a Sunspot between 3813 and 9182 Angstroms (Kitt Peak National Observatory, Tucson, Ariz., 1977), plate 6.
  3. P. J. Treanor, "The spatial analysis of magnetic fields in sun-spots," Mon. Not. R. Astron. Soc. 120, 412–429 (1960).
  4. H. Kopfermann, Nuclear Moments (Academic, New York, 1958), p. 13.
  5. Ref. 4, p. 26.
  6. R. E. Trees, "Hyperfine structure formulas for LS coupling," Phys. Rev. 92, 308–314 (1953). [CrossRef]
  7. J. Dembczynski, W. Ertmer, U. Johann, S. Penselin, and P. Stinner, "Laser-rf double-resonance studies of the hyperfine structure of metastable atomic states of 55Mn," Z. Phys. A 291, 207–218 (1979). [CrossRef]
  8. A. J. Booth, M. J. Shallis, and M. Wells, "Hyperfine structure measurements for lines of astrophysical interest in Mn I," Mon. Not. R. Astron. Soc. 205, 191–205 (1983).
  9. B. G. Wybourne, Spectroscopic Properties of Rare Earths (Interscience, New York, 1965), pp. 155–156. The denominator 2F(4F2 – 1)½ has been omitted in his Eq. (5–118).
  10. C. Corliss and J. Sugar, "Energy levels of manganese, Mn I through Mn XXV," J. Phys. Chem. Ref. Data 6, 1253–1329 (1977). [CrossRef]
  11. C. M. Lederer, J. M. Hollander, and I. Perlman, Tables of Isotopes, 6th ed. (Wiley, New York, 1967), p. 188.
  12. E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge U. Press, Cambridge, 1935), p. 427.
  13. E. Back and S. Goudsmit, "Kernmoment und Zeemaneffekt von Wismut," Z. Phys. 47, 174–183 (1928). [CrossRef]
  14. A. G. Shenstone and H. A. Blair, "A method for the magnetic analysis of a spectrum by means of unresolved Zeeman patterns, and its application to Ag II," Phil. Mag. 8, 765–771 (1929).

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