... same

Elements such as Cr and Ti have also been studied exhaustively, but most of the efforts have been devoted to iron because of its astrophysical importance. As a result, the more precise oscillator strengths available are those of neutral iron.

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... broadening

The classical Unsöld formula is adopted together with an enhancement factor E=2.0, which is in between the values used by Gurtovenko & Kostik (E=1.5) and Thévenin (E=2.5).

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