Fine-structure populations for the 6D ground state of Fe II

Details Fine-structure populations for the 6D ground state of Fe II Fine-structure populations for the 6D ground state of Fe II

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...332..539k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 332, Sept. 1, 1988, p. 539-542. SERC-supported research.

Astronomy and Astrophysics

Astrophysics

20

Astrophysics, Electron Density Profiles, Fine Structure, Ground State, Iron, Ultraviolet Spectra, Absorption Spectra, Transition Probabilities

Scientific paper

In this paper, recent R-matrix calculations of electron impact excitation rates in Fe II are used to estimate relative level populations for the 3d6 4s 6D ground state applicable to astrophysical plasmas. The results are found to be up to a factor of two different from the earlier calculations of Nussbaumer and Story (1980). Effective collision strengths for transitions among the 3d6 4s 6D and 3d7 4F levels in Fe II are also given.

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