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Table 2
Level energies for Fe xii (n = 3,4).
| i | Conf. | Lev. | Eexp | Et | Et (S05) | |
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| 1 | 3s2 3p3 | 4S3/2 | 0.0 | 0.0 | 0.0 | |
| 2 | 3s2 3p3 | 2D3/2 | 0.379 | 0.405 (–0.027) | 0.405 (–0.026) | |
| 3 | 3s2 3p3 | 2D5/2 | 0.420 | 0.447 (–0.027) | 0.445 (–0.025) | |
| 4 | 3s2 3p3 | 2P1/2 | 0.675 | 0.706 (–0.031) | 0.698 (–0.023) | |
| 5 | 3s2 3p3 | 2P3/2 | 0.734 | 0.762 (–0.028) | 0.752 (–0.019) | |
| 6 | 3s 3p4 | 4P5/2 | 2.500 | 2.496 ( 0.004) | 2.493 ( 0.008) | |
| 7 | 3s 3p4 | 4P3/2 | 2.588 | 2.582 ( 0.006) | 2.577 ( 0.011) | |
| 8 | 3s 3p4 | 4P1/2 | 2.627 | 2.622 ( 0.006) | 2.616 ( 0.011) | |
| 9 | 3s 3p4 | 2D3/2 | 3.096 | 3.119 (–0.024) | 3.113 (–0.017) | |
| 10 | 3s 3p4 | 2D5/2 | 3.114 | 3.137 (–0.023) | 3.129 (–0.015) | |
| 11 | 3s2 3p2 3d | 2P3/2 | 3.551 | 3.596 (–0.044) | 3.591 (–0.040) | |
| 12 | 3s2 3p2 3d | 2P1/2 | 3.594 | 3.641 (–0.047) | 3.633 (–0.039) | |
| 13 | 3s 3p4 | 2S1/2 | 3.740 | 3.787 (–0.047) | 3.773 (–0.033) | |
| 14 | 3s2 3p2 3d | 4F3/2 | 3.891 | 3.947 (–0.056) | 3.945 (–0.054) | |
| 15 | 3s2 3p2 3d | 4F5/2 | 3.925 | 3.982 (–0.057) | 3.979 (–0.054) | |
| 16 | 3s2 3p2 3d | 4F7/2 | 3.974 | 4.033 (–0.059) | 4.029 (–0.055) | |
| 17 | 3s2 3p2 3d | 4F9/2 | 4.038 | 4.097 (–0.059) | 4.091 (–0.053) | |
| 18 | 3s2 3p2 3d | 2F5/2 | – | 4.099 | 4.095 | |
| 19 | 3s2 3p2 3d | 4D1/2 | – | 4.129 | 4.122 | |
| 20 | 3s2 3p2 3d | 4D7/2 | 4.074 | 4.135 (–0.061) | 4.129 (–0.055) | |
| 21 | 3s2 3p2 3d | 4D3/2 | 4.074 | 4.140 (–0.066) | 4.132 (–0.058) | |
| 22 | 3s2 3p2 3d | 4D5/2 | 4.126 | 4.182 (–0.057) | 4.174 (–0.049) | |
| 23 | 3s2 3p2 3d | 2F7/2 | 4.205 | 4.271 (–0.066) | 4.262 (–0.057) | |
| 24 | 3s2 3p2 3d | 2G7/2 | 4.506 | 4.598 (–0.092) | 4.592 (–0.085) | |
| 25 | 3s2 3p2 3d | 2G9/2 | 4.531 | 4.626 (–0.095) | 4.619 (–0.087) | |
| 26 | 3s 3p4 | 2P3/2 | 4.573 | 4.665 (–0.092) | 4.649 (–0.077) | |
| 27 | 3s2 3p2 3d | 4P5/2 | 4.670 | 4.764 (–0.094) | 4.754 (–0.084) | |
| 28 | 3s 3p4 | 2P1/2 | 4.683 | 4.772 (–0.090) | 4.755 (–0.073) | |
| 29 | 3s2 3p2 3d | 4P3/2 | 4.709 | 4.801 (–0.092) | 4.790 (–0.081) | |
| 30 | 3s2 3p2 3d | 4P1/2 | 4.736 | 4.825 (–0.088) | 4.813 (–0.076) | |
| 31 | 3s2 3p2 3d | 2D3/2 | 4.794 | 4.892 (–0.098) | 4.880 (–0.086) | |
| 32 | 3s2 3p2 3d | 2D5/2 | 4.893 | 4.995 (–0.102) | 4.980 (–0.087) | |
| 33 | 3s2 3p2 3d | 2D3/2 | 5.048 | 5.154 (–0.106) | 5.138 (–0.090) | |
| 34 | 3s2 3p2 3d | 2D5/2 | 5.054 | 5.162 (–0.108) | 5.146 (–0.092) | |
| 35 | 3s2 3p2 3d | 2P1/2 | 5.192 | 5.319 (–0.127) | 5.309 (–0.116) | |
| 36 | 3s2 3p2 3d | 2F5/2 | 5.256 | 5.384 (–0.128) | 5.370 (–0.114) | |
| 37 | 3s2 3p2 3d | 2S1/2 | 5.250 | 5.387 (–0.137) | 5.366 (–0.115) | |
| 38 | 3s2 3p2 3d | 2P3/2 | 5.264 | 5.392 (–0.128) | 5.381 (–0.117) | |
| 39 | 3s2 3p2 3d | 2F7/2 | 5.296 | 5.425 (–0.129) | 5.410 (–0.113) | |
| 40 | 3s2 3p2 3d | 2D5/2 | 5.504 | 5.637 (–0.133) | 5.617 (–0.114) | |
| 41 | 3s2 3p2 3d | 2D3/2 | 5.518 | 5.651 (–0.133) | 5.631 (–0.113) | |
| 84 | 3s 3p3 3d | 4D7/2 | 7.295 | 7.471 (–0.176) | 7.456 (–0.161) | |
| 85 | 3s 3p3 3d | 2D3/2 | 7.339 | 7.479 (–0.140) | 7.468 (–0.130) | |
| 87 | 3s 3p3 3d | 4D5/2 | 7.330 | 7.505 (–0.175) | 7.489 (–0.159) | |
| 272 | 3s2 3p2 4s | 4P1/2 | 11.318 | 11.505 (–0.187) | – | |
| 278 | 3s2 3p2 4s | 4P3/2 | 11.388 | 11.567 (–0.179) | – | |
| 288 | 3s2 3p2 4s | 4P5/2 | 11.464 | 11.639 (–0.175) | – | |
| 290 | 3s2 3p2 4s | 2P1/2 | 11.461 | 11.655 (–0.193) | – | |
| 298 | 3s2 3p2 4s | 2P3/2 | 11.540 | 11.739 (–0.199) | – | |
| 324 | 3s2 3p2 4s | 2D5/2 | 11.734 | 11.935 (–0.200) | – | |
| 325 | 3s2 3p2 4s | 2D3/2 | 11.747 | 11.948 (–0.201) | – | |
| 364 | 3s2 3p2 4p | 4D3/2 | 12.296 | 12.472 (–0.176) | – | |
| 370 | 3s2 3p2 4p | 4D5/2 | 12.365 | 12.537 (–0.172) | – | |
| 403 | 3s2 3p2 4p | 2F5/2 | 12.736 | 12.933 (–0.197) | – | |
| 407 | 3s2 3p2 4p | 2F7/2 | 12.771 | 12.972 (–0.200) | – | |
| 484 | 3s2 3p2 4d | 4P5/2 | 13.745 | 13.953 (–0.208) | – | |
| 487 | 3s2 3p2 4d | 4F5/2 | 13.797 | 13.997 (–0.200) | – | |
| 490 | 3s2 3p2 4d | 4P3/2 | 13.827 | 14.026 (–0.199) | – | |
| 491 | 3s2 3p2 4d | 2F5/2 | 13.815 | 14.045 (–0.230) | – | |
| 503 | 3s2 3p2 4d | 2F7/2 | 13.880 | 14.113 (–0.233) | – | |
| 519 | 3s2 3p2 4d | 4D7/2 | 13.962 | 14.163 (–0.201) | – | |
| 528 | 3s2 3p2 4d | 2D5/2 | 13.988 | 14.206 (–0.218) | – | |
| 531 | 3s2 3p2 4d | 2D3/2 | 14.001 | 14.221 (–0.220) | – | |
| 542 | 3s2 3p2 4d | 2F7/2 | 14.118 | 14.333 (–0.215) | – | |
| 545 | 3s2 3p2 4d | 2F5/2 | 14.137 | 14.344 (–0.206) | – | |
| 554 | 3s2 3p2 4d | 2D5/2 | 14.140 | 14.388 (–0.249) | – | |
| 568 | 3s2 3p2 4d | 2P3/2 | 14.268 | 14.495 (–0.227) | – | |
| 587 | 3s2 3p2 4d | 2S1/2 | 14.302 | 14.581 (–0.279) | – | |
| 618 | 3s2 3p2 4f | 4G5/2 | 14.678 | 14.915 (–0.237) | – | |
| 619 | 3s2 3p2 4f | 4G7/2 | 14.707 | 14.942 (–0.235) | – | |
| 628 | 3s2 3p2 4f | 4G9/2 | 14.761 | 14.991 (–0.230) | – | |
| 644 | 3s2 3p2 4f | 4G11/2 | 14.820 | 15.045 (–0.225) | – | |
| 672 | 3s2 3p2 4f | 4F7/2 | 14.866 | 15.128 (–0.262) | – | |
| 688 | 3s2 3p2 4f | 2G9/2 | 14.908 | 15.193 (–0.285) | – | |
| 716 | 3s2 3p2 4f | 2H11/2 | 15.192 | 15.451 (–0.259) | – | |
| 719 | 3s2 3p2 4f | 2H9/2 | 15.210 | 15.469 (–0.259) | – | |
Notes. The experimental level energies Eexp (in Rydbergs, from Del Zanna et al. 2004, for the n = 3 and Fawcett et al. 1972, for n = 4) are shown, together with those obtained from our scattering target Et and those from the scattering calculation of Storey et al. (2005, S05). Values in parentheses indicate differences with Eexp. Only a selection of levels is shown.
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