Joint Institute for Laboratory Astrophysics, University of Colorado and National Bureau of Standards, Boulder, Colorado 80309 USA
The author is also with the Department of Astrophysical, Planetary and Atmospheric Sciences and the Department of Physics, University of Colorado, Boulder, Colorado 80309.
The combined effects of hyperfine structure and Zeeman splitting have been calculated for the a6D1/2–z6D1/2 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.
Armen Sargsyan, Emmanuel Klinger, Grant Hakhumyan, Ara Tonoyan, Aram Papoyan, Claude Leroy, and David Sarkisyan J. Opt. Soc. Am. B 34(4) 776-784 (2017)
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Monn intensity-weighted positions for the six strong components with ΔMF = ±1 and the six strong components with ΔMF = −1, in units of 0.0001 cm−1, relative to the mean intensity-weighted position of the line for zero magnetic field. ΔMF = ±1 refers to transitions of the type a6D1/2(MF) → z6D1/2(MF ± 1).
Total strength of the groups of six strong components, on a scale with the total strength 2 units for each ΔMF. The difference between 2 and the tabulated number gives the total intensity of the remaining 14 weak components.
In units of 0.0001 cm−1 relative to the ΔM = 0 position in the absence of hyperfine structure.
Table 2
Positions of Outermost Components and Effective Z Factors
Position of the outermost strong component in units of 0.0001 cm−1, relative to the mean intensity-weighted position of the line for zero magnetic field. ΔMF = ±1 refers to transitions of the type a6D1/2(MF) → z6D1/2(MF ± 1).
Calculated using the two previous columns, the Zeeman position without hyperfine structure from Table 1, and Eq. (3).
Tables (2)
Table 1
Mean Positions of Strong Components and Effective Z Factors
Monn intensity-weighted positions for the six strong components with ΔMF = ±1 and the six strong components with ΔMF = −1, in units of 0.0001 cm−1, relative to the mean intensity-weighted position of the line for zero magnetic field. ΔMF = ±1 refers to transitions of the type a6D1/2(MF) → z6D1/2(MF ± 1).
Total strength of the groups of six strong components, on a scale with the total strength 2 units for each ΔMF. The difference between 2 and the tabulated number gives the total intensity of the remaining 14 weak components.
In units of 0.0001 cm−1 relative to the ΔM = 0 position in the absence of hyperfine structure.
Table 2
Positions of Outermost Components and Effective Z Factors
Position of the outermost strong component in units of 0.0001 cm−1, relative to the mean intensity-weighted position of the line for zero magnetic field. ΔMF = ±1 refers to transitions of the type a6D1/2(MF) → z6D1/2(MF ± 1).
Calculated using the two previous columns, the Zeeman position without hyperfine structure from Table 1, and Eq. (3).