Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..641g&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 93, Oct.-Nov. 1981, p. 641-646.
Astronomy and Astrophysics
Astronomy
17
Line Spectra, Neutral Atoms, S Stars, Spectral Energy Distribution, Stellar Spectra, Technetium, Manganese, Stellar Spectrophotometry
Scientific paper
Oscillator strengths are calculated for lines in the spectrum of neutral technetium which may be of importance in the study of stellar spectra. The calculations were performed by the setting up and diagonalization of the energy matrices of the 4d5(6S)5s5p and 4d6(5D)5p partial configurations for the 37 classified energy levels of odd parity arising from these configurations. Oscillator strengths obtained in the same manner for the corresponding transitions in neutral manganese support the accuracy of the Tc results for transitions from the a 6S level and the a 6D-z 6D and a 6D-y 6P multiplets, and indicate that the results for the a 6D-z 6F multiplet are probably overestimated by about a factor of 2.6.
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