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Table 1

Excitation energies in cm-1 for Fe XIII as a function of the increasing size of the CSF expansion.

Level MR n = 4 n = 5 n = 6 n = 7 E obs

3s2 3p23P0 0 0 0 0 0 0
3s2 3p23P1 9076 9220 9255 9275 9281 9303
3s2 3p23P2 18543 18557 18551 18554 18553 18561
3s2 3p21D2 50531 48895 48483 48317 48236 48069
3s2 3p21S0 95531 93155 92338 91985 91839 91511
3s 211494 213687 213982 214189 214152 214624
3s 288418 287841 287418 287287 287123 287205
3s 288577 287998 287570 287435 287270 287356
3s 291342 290791 290381 290255 290095 290180
3s 331811 330395 329556 329207 328974 328927
3s 332489 331085 330261 329919 329689 329637
3s 333031 331650 330870 330545 330323 330282
3s 365802 363349 362891 362665 362482 362407
3s 425440 417451 416444 415875 415577 415462
3s 436053 431815 430817 430476 430277 430124
3s 442770 438580 437594 437259 437064 436919
3s 449174 440987 439527 438735 438365 438086
3s 452714 448609 447648 447325 447134 447001
3s 496799 489144 487534 486848 486542 486358
3s 504973 497626 496033 495387 495102 494942
3s 509858 501725 500082 499375 499060 498870
3s 510705 504078 502558 501949 501676 501514
3s 517400 509237 507607 506950 506661 506505
3s 520350 511899 510255 509592 509303 509176
3s 520606 511974 510342 509684 509394 509250
3s 571745 562189 559131 557905 557432 556911
3s 586138 576606 573369 571925 571376 570743

Notes.Expansions are obtained from CSFs that can be generated from SD excitations, from an MR, to an active set labeled by the highest n value of the of orbitals in the set. Observed energies are from Del Zanna (2011).

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