F-values for TB II and a search for terbium in the solar photosphere

Details F-values for TB II and a search for terbium in the solar photosphere F-values for TB II and a search for terbium in the solar photosphere

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981soph...71..223b&link_type=abstract

Solar Physics, vol. 71, June 1981, p. 223-231. Research supported by the Fonds de la Recherche Fondamentale Collective.

Physics

8

Abundance, Metal Ions, Photosphere, Solar Spectra, Terbium, Transition Probabilities, Atomic Energy Levels, Hyperfine Structure, Line Spectra, Optical Transition

Scientific paper

It is noted that thus far the photospheric abundance of terbium has not been determined, mainly because there are no oscillator strengths (neither experimental nor theoretical) available for Tb II. A quantitative investigation of this ion is presented, based on recent hyperfine structure measurements and on semiempirical gf-value calculations for a sample of selected transitions of solar interest. It is noted that oscillator strengths have been obtained for the first time for 12 transitions of Tb II. Solar implications based on these f-values and on recent hyperfine structure data are analyzed. In particular, a detailed investigation of a weak absorption feature located around 3658 A is presented.

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