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Table 2
Level energies (cm-1) for Fe ix.
| i | Conf. | Mixing | Lev. | E exp | E t | |
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| 1 | 3s2 3p6 | (96%) | 1S0 | 0.0 | 0.0 | |
| 2 | 3s2 3p5 3d | (96%) | 3P0 | 405 772.0 | 411 763.0 (–5991) | |
| 3 | 3s2 3p5 3d | (95%) | 3P1 | 408 315.1 | 414 513.0 (–6198) | |
| 4 | 3s2 3p5 3d | (94%) | 3P2 | 413 669.2 | 420 142.0 (–6473) | |
| 5 | 3s2 3p5 3d | (96%) | 3F4 | 425 809.8 | 434 291.0 (–8481) | |
| 6 | 3s2 3p5 3d | (91%) | 3F3 | 429 310.9 | 437 720.0 (–8409) | |
| 7 | 3s2 3p5 3d | (89%) | 3F2 | 433 818.8 | 442 233.0 (–8414) | |
| 8 | 3s2 3p5 3d | (67%) +12(29%) | 3D3 | 455 612.2 | 465 046.0 (–9434) | |
| 9 | 3s2 3p5 3d | (60%) +11(28%) | 1D2 | 456 752.7 | 466 514.0 (–9761) | |
| 10 | 3s2 3p5 3d | (95%) | 3D1 | 460 616.0 | 469 832.0 (–9216) | |
| 11 | 3s2 3p5 3d | (62%) +9(31%) | 3D2 | 462 616.6 | 472 208.0 (–9591) | |
| 12 | 3s2 3p5 3d | (64%) +8(27%) | 1F3 | 465 828.4 | 475 387.0 (–9559) | |
| 13 | 3s2 3p5 3d | (95%) | 1P1 | 584546.0 | 601 580.0 (–17034) | |
| 14 | 3s 3p6 3d | (77%) +127(c4 13%) | 3D1 | 726 734.0 | 740 251.0 (–13517) | |
| 15 | 3s 3p6 3d | (77%) +129(c4 13%) | 3D2 | 727 560.0 | 741 190.0 (–13630) | |
| 16 | 3s 3p6 3d | (77%) +124(c4 13%) | 3D3 | 728 935.0 | 742 727.0 (–13792) | |
| 17 | 3s 3p6 3d | (71%) +117(c4 14%) | 1D2 | 749 871.0 | 766 202.0 (–16331) | |
| 85 | 3s2 3p4 3d2 | (45%) +124(29%) | 3D3 | 927 058 | 968 359.0 (–41300) | TN |
| 94 | 3s2 3p5 4s | (69%) +101(28%) | 3P1 | 950 498.0 | 998 404.0 (–47906) | |
| 95 | 3s2 3p4 3d2 | (40%) +69(25%) +41(23%) | 3G4 | 955 806.0 | 1 001 613.0 (–45807) | R |
| 96 | 3s2 3p4 3d2 | (23%) +73(27%) +40(44%) | 3G5 | 956 333.0 | 1 001 993.0 (–45660) | R |
| 97 | 3s2 3p4 3d2 | (16%) +67(17%) +42(25%) +99(27%) | 3G3 | 956 814 | 1 002 361.0 (–45547) | R |
| 101 | 3s2 3p5 4s | (69%) +94(28%) | 1P1 | 965 568.0 | 1 013 667.0 (–48099) | |
| 105 | 3s2 3p4 3d2 | (22%) +113(27%) +80(27%) +39(10%) | 3F4 | 974 742 | 1 019 230.0 (–44488) | TN |
| 110 | 3s2 3p4 3d2 | (40%) +85(26%) | 3D3 | 990 957 | 1 037 237.0 (–46280) | R |
| 111 | 3s2 3p4 3d2 | (37%) +83(24%) | 3D2 | 992 399 | 1 038 354.0 (–45955) | R |
| 118 | 3s2 3p4 3d2 | (49%) +45(11%) +39(18%) | 3F4 | 1 020 759. | 1 067 893.0 (–47134) | TN |
| 148 | 3s2 3p5 4p | (91%) | 1S0 | 1 089 969.0 | 1 157 636.0 (–67667) | R |
| 166 | 3s2 3p4 3d2 | (54%) +117(22%) | 1D2 | 1 136 727 | 1 185 857.0 (–49130) | TN |
| 207 | 3s2 3p5 4d | (70%) +224(24%) | 1P1 | 1 198 222.0 | 1 250 291.0 (–52069) | |
| 224 | 3s2 3p5 4d | (67%) +207(23%) | 3D1 | 1 213 150.0 | 1 264 615.0 (–51465) | |
| 256 | 3s 3p6 4s | (69%) +830(c12 25%) | 1S0 | 1 263 552 | 1 310 368.0 (–46815) | TN |
| 293 | 3s2 3p5 4f | (97%) | 3D1 | 1 300 923.0 | 1 356 738.0 (–55815) | |
| 296 | 3s2 3p5 4f | (92%) | 3D2 | 1 302 841.0 | 1 358 711.0 (–55870) | |
| 301 | 3s2 3p5 4f | (97%) | 3G5 | 1 304 598.0 | 1 361 221.0 (–56623) | |
| 303 | 3s2 3p5 4f | (81%) | 3D3 | 1 305 762.0 | 1 361 814.0 (–56052) | |
| 308 | 3s2 3p5 4f | (72%) +324(22%) | 3G4 | 1 306 319.0 | 1 363 201.0 (–56882) | |
| 318 | 3s2 3p5 4f | (61%) +342(15%) +340(20%) | 3G3 | 1 310 158.0 | 1 367 121.0 (–56963) | |
| 324 | 3s2 3p5 4f | (46%) +343(45%) | 1G4 | 1 311 755.0 | 1 369 566.0 (–57811) | |
| 335 | 3s2 3p5 4f | (71%) +353(23%) | 3F2 | 1 316 758.0 | 1 375 707.0 (–58949) | |
| 340 | 3s2 3p5 4f | (38%) +318(36%) +342(22%) | 1F3 | 1 323 657.0 | 1 380 225.0 (–56568) | |
| 342 | 3s2 3p5 4f | (50%) +340(31%) +303(15%) | 3F3 | 1 324 715.0 | 1 381 539.0 (–56824) | |
| 343 | 3s2 3p5 4f | (49%) +308(19%) +324(28%) | 3F4 | 1 324 876.0 | 1 381 731.0 (–56855) | |
| 353 | 3s2 3p5 4f | (69%) +335(21%) | 1D2 | 1 331 244.0 | 1 390 132.0 (–58888) | |
| 395 | 3s2 3p5 5s | (50%) +415(39%) | 1P1 | 1 358 363.0 | 1 413 670.0 (–55307) | |
| 415 | 3s2 3p5 5s | (53%) +395(40%) | 3P1 | 1 372 683.0 | 1 427 126.0 (–54443) | |
| 775 | 3s2 3p5 5f | (98%) | 3G5 | 1 513 000.0 | 1 571 754.0 (–58754) | |
| 786 | 3s2 3p5 5f | (58%) +826(35%) | 3F4 | 1 518 650.0 | 1 576 087.0 (–57437) | |
| 820 | 3s2 3p5 5f | (41%) +784(24%) +778(32%) | 3F3 | 1 531 107.0 | 1 588 550.0 (–57443) | |
Notes. The experimental level energies Eexp are shown, together with those obtained from our scattering target Et. Values in parentheses indicate differences with Eexp. Only a selection of levels that have experimental energies is shown. TN indicates a new tentative observed energy, R a revised one (see text, Sect. 3.5).
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