Open Access

Table A.3

First energy levels of Fe II, which give rise to the three main line series at 2400, 2600, and 2750 Å.

Configuration Term J E (cm−1) E/kB (K)
3d6(5D)4s a6D 9/2 0 0
7/2 385 554
5/2 668 961
3/2 863 1241
1/2 977 1406
3d7 a4F 9/2 1873 2694
7/2 2430 3497
5/2 2838 4084
3/2 3117 4486
3d6(5D)4s a4D 7/2 7955 11448
5/2 8392 12077
3/2 8680 12492
1/2 8847 12732

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