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Table 1:

Level energies for Fe XI.

i
Conf. T $E_{\rm exp}$ $E_{\rm th}$ $E_{\rm NIST}$

1
3s2 3p4 3P2 0 0 0 (0)
2 3s2 3p4 3P1 12 667.8 12 587 (81) 12 667.9 (0)
3 3s2 3p4 3P0 14 306 14 245 (61) 14 312 (-6)
4 3s2 3p4 1D2 37 743 39 504 (-1761) 37 743.6 (-1)
5 3s2 3p4 1S0 80 831 80 190 (641) 80 814.7 (16)
6 3s 3p5 3P2 283 451 279 487 (4064) 283 458 (-7)
7 3s 3p5 3P1 293 458 289 478 (3980) 293 458 (0)
8 3s 3p5 3P0 299 463 295 416 (4047) 299 463 (0)
9 3s 3p5 1P1 361 446 362 421 (-675) 361 442 (4)
10 3s2 3p3 3d 5D0 387 444 386 437 (1507) -
11 3s2 3p3 3d 5D1 387 426 386 478 (1448) -
12 3s2 3p3 3d 5D2 387 440 386 484 (1356) -
13 3s2 3p3 3d 5D3 388 468 387 449 (1219) -
14 3s2 3p3 3d 5D4 389 427 388 480 (1047) -
15 3s2 3p3 3d 3D2 412 456 413 427 (-471) -
16 3s2 3p3 3d 3D3 415 426 415 458 (-532) -
17 3s2 3p3 3d 3D1 417 449 417 429 (-480) -
18 3s2 3p3 3d 3F2 422 444 423 471 (-1027) -
19 3s2 3p3 3d 1S0 - 426 404 -
20 3s2 3p3 3d 3F3 426 422 427 435 (-1413) -
21 3s2 3p3 3d 3F4 430 422 432 467 (-1745) -
22 3s2 3p3 3d 3G3 - 452 421 -
23 3s2 3p3 3d 3G4 450 411 454 413 (-3902) -
24 3s2 3p3 3d 3G5 452 416 456 442 (-4226) -
25 3s2 3p3 3d 1G4 459 418 463 479 (-4561) -
26 3s2 3p3 3d 1D2 - 468 495 -
27 3s2 3p3 3d 3D1 - 484 412 -
28 3s2 3p3 3d 3P0 - 484 477 -
29 3s2 3p3 3d 3P1 484 430 486 400 (-2070) -
30 3s2 3p3 3d 3F3 485 439 488 474 (-3435) -
31 3s2 3p3 3d 3F2 - 489 460 -
32 3s2 3p3 3d 3F4 486 413 490 469 (-3656) -
33 3s2 3p3 3d 3D2 489 478 492 480 (-3002) -
34 3s2 3p3 3d 3P2 494 413 496 444 (-2531) 496 490 (-2077)
35 3s2 3p3 3d 3D3 497 435 500 455 (-3320) -
36 3s2 3p3 3d 1F3 525 460 530 447 (-5087) -
37 3s2 3p3 3d 3P1 531 470 536 411 (-5741) 526 480 (4590)
38 3s2 3p3 3d 3P2 531 404 537 400 (-5696) 531 490 (14)
39 3s2 3p3 3d 3S1 533 445 540 491 (-6746) 533 450 (-5)
40 3s2 3p3 3d 3P0 541 477 547 499 (-5822) 541 420 (57)
41 3s2 3p3 3d 3P1 541 424 547 432 (-6308) 541 490 (34)
42 3s2 3p3 3d 3D3 554 421 561 499 (-7378) 554 400 (21)
43 3s2 3p3 3d 3D2 561 415 569 408 (-7693) 561 410 (5)
44 3s2 3p3 3d 3D1 566 496 573 492 (-7596) 566 480 (16)
45 3s2 3p3 3d 1D2 578 490 587 476 (-8886) 578 460 (30)
46 3s2 3p3 3d 1F3 594 447 603 420 (-9673) 594 430 (17)
47 3s2 3p3 3d 1P1 623 401 631 499 (-7998) 623 480 (21)
54 3s 3p4 3d 5F5 695 472 696 449 (-577) -
67 3s 3p4 3d 3F4 739 460 741 445 (-2185) -
79 3s 3p4 3d 3D3 805 492 807 435 (-1743) -
103 3s 3p4 3d 3D3 875 416 877 472 (-1656) -

Notes. Columns indicate the indices, the configuration, the dominant LSJ, the experimental level energies  $E_{\rm exp}$ (cm-1), those obtained from the scattering calculation  $E_{\rm th}$, and those from NIST. Values in parentheses indicate differences with the experimental energies. Only a selection of observed levels from the lower configurations, producing the EUV lines discussed here, are presented.


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