Table 1
Level energies for Fe xiii.
| i | Conf. | Lev. | Eexp | ENIST | |
|
|
|||||
| 1 | 3s2 3p2 | 3P0 | 0.0 | 0.0 (0) | |
| 2 | 3s2 3p2 | 3P1 | 9303.1 | 9302.5 (1) | |
| 3 | 3s2 3p2 | 3P2 | 18 561.7 | 18 561.0 (1) | |
| 4 | 3s2 3p2 | 1D2 | 48 069.7 | 48 068.0 (2) | |
| 5 | 3s2 3p2 | 1S0 | 91 511.0 | 91 508.0 (3) | |
| 6 | 3s 3p3 | 5S2 | 214 624.0 | 214 608.0 (16) | |
| 7 | 3s 3p3 | 3D1 | 287 205.0 | 287 205.0 (0) | |
| 8 | 3s 3p3 | 3D2 | 287 356.0 | 287 360.0 (–4) | |
| 9 | 3s 3p3 | 3D3 | 290 180.0 | 290 210.0 (–30) | |
| 10 | 3s 3p3 | 3P0 | 328 927.0 | – | |
| 11 | 3s 3p3 | 3P1 | 329 637.0 | 329 647.0 (–10) | |
| 12 | 3s 3p3 | 3P2 | 330 282.0 | 330 279.0 (3) | |
| 13 | 3s 3p3 | 1D2 | 362 407.0 | 362 330.0 (77) | |
| 14 | 3s 3p3 | 3S1 | 415 462.0 | 415 462.0 (0) | |
| 15 | 3s2 3p 3d | 3F2 | 430 124.0 | – | |
| 16 | 3s 3p3 | 1P1 | 438 086.0 | 438 050.0 (36) | |
| 17 | 3s2 3p 3d | 3F3 | 436 919.0 | – | |
| 18 | 3s2 3p 3d | 3F4 | 447 001.0 | – | |
| 19 | 3s2 3p 3d | 3P2 | 486 358.0 | 486 358.0 (0) | |
| 20 | 3s2 3p 3d | 3P1 | 494 942.0 | 494 942.0 (0) | |
| 21 | 3s2 3p 3d | 1D2 | 498 870.0 | 498 870.0 (0) | |
| 22 | 3s2 3p 3d | 3P0 | 501 514.0 | 503 340.0 (–1826) | |
| 23 | 3s2 3p 3d | 3D1 | 506 505.0 | 506 502.0 (3) | |
| 24 | 3s2 3p 3d | 3D3 | 509 176.0 | 509 176.0 (0) | |
| 25 | 3s2 3p 3d | 3D2 | 509 250.0 | 509 250.0 (0) | |
| 26 | 3s2 3p 3d | 1F3 | 556 911.0 | 556 870.0 (41) | |
| 27 | 3s2 3p 3d | 1P1 | 570 743.0 | 570 690.0 (53) | |
| 28 | 3p4 | 3P2 | 591 362.0 | – | |
| 42 | 3s 3p2 3d | 3F2 | 669 564.0 | – | |
| 56 | 3s 3p2 3d | 3D2 | 753 767.0 | – | |
| 60 | 3s 3p2 3d | 3F2 | 777 950.0 | – | |
| 61 | 3s 3p2 3d | 3F3 | 783 540.0 | – | |
| 64 | 3s 3p2 3d | 3F4 | 792 105.0 | – | |
| 72 | 3s 3p2 3d | 3D2 | 817 170.0 | – | |
| 84 | 3s 3p2 3d | 3P2 | 897 511.0 | – | |
Notes. Columns indicate the indices, the configuration, the dominant LSJ, the experimental level energies Eexp (cm-1), and those from NIST. Values in parentheses indicate differences with the experimental energies. Only a selection of observed levels from the lower configurations that produce the EUV lines discussed here are presented.
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