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Table 2

Level energies for Ni xv.

i Conf. Mixing Lev. E exp E t

1 3s2 3p2 (91%) 3P0 0.0 0.0
2 3s2 3p2 (96%) 3P1 14 917.5 14 319.0 (599)
3 3s2 3p2 (84%) +4(12%) 3P2 27 376.5 27 010.0 (367)
4 3s2 3p2 (84%) +3(12%) 1D2 62 852.1 63 770.0 (–918)
5 3s2 3p2 (90%) 1S0 111 719.0 113 903.0 (–2184) F98
6 3s 3p3 (97%) 5S2 254 700.0 248 965.0 (5735)
7 3s 3p3 (82%) +23(c3 10%) 3D1 335 400.0 333 779.0 (1621)
8 3s 3p3 (80%) +25(c3 9%) +12(6%) 3D2 335 682.0 334 081.0 (1601)
9 3s 3p3 (87%) +24(c3 10%) 3D3 340 794.0 339 070.0 (1724)
10 3s 3p3 (88%) +22(c3 8%) 3P0 383 767.0
11 3s 3p3 (83%) +20(c3 8%) 3P1 385 460.0 385 158.0 (302) T06
12 3s 3p3 (72%) +8(6%) +13(5%) +19(c3 8%) 3P2 386 590.0 386 249.0 (341)
13 3s 3p3 (50%) +21(c3 37%) +12(7%) 1D2 422 855.0 424 254.0 (–1399)
14 3s 3p3 (72%) +17(20%) 3S1 478 041.0 483 279.0 (–5238)
15 3s2 3p 3d (95%) 3F2 498 912.0
16 3s2 3p 3d (95%) 3F3 508 965.0
17 3s 3p3 (65%) +27(c3 8%) +14(22%) 1P1 509 167.0 514 636.0 (–5469)
18 3s2 3p 3d (97%) 3F4 524 073.0
19 3s2 3p 3d (45%) +25(9%) +13(c2 15%) +21(20%) 3P2 555 797.0 564 331.0 (–8534)
20 3s2 3p 3d (46%) +23(38%) 3P1 565 800.0 574 026.0 (–8226)
21 3s2 3p 3d (33%) +25(17%) +13(c2 21%) +19(17%) 1D2 574 267.0 582 273.0 (–8006)
22 3s2 3p 3d (87%) +10(c2 8%) 3P0 584 562.0
23 3s2 3p 3d (45%) +7(c2 6%) +20(39%) 3D1 582 760.0 590 380.0 (–7620)
24 3s2 3p 3d (84%) +9(c2 9%) 3D3 585 185.0 594 064.0 (–8879)
25 3s2 3p 3d (58%) +8(c2 7%) +19(23%) 3D2 586 379.0 594 578.0 (–8199)
26 3s2 3p 3d (94%) 1F3 638 477.0 650 236.0 (–11 759)
27 3s2 3p 3d (84%) +17(c2 8%) 1P1 666 242.0
279 3s2 3p 4s (95%) 3P2 1 730 700.0 1 745 611.0 (–14 911)
283 3s2 3p 4s (79%) +271(15%) 1P1 1 741 300.0 1 755 249.0 (–13 949)
328 3s2 3p 4p (87%) 3P0 1 852 850.0 1 867 519.0 (–14 668) TN
376 3s 3p2 4s (92%) 3P0 2 013 534.0 2 018 280.0 (–4746) N
385 3s2 3p 4d (60%) +392(22%) +395(10%) 3D2 2 018 400.0 2 037 045.0 (–18 645)
389 3s2 3p 4d (46%) +393(33%) +398(13%) 3D3 2 020 500.0 2 039 984.0 (–19 484)
393 3s2 3p 4d (46%) +389(45%) 3F3 2 042 500.0 2 059 762.0 (−17 262)
398 3s2 3p 4d (77%) +393(14%) 1F3 2 053 000.0 2 071 507.0 (−18 507)
439 3s2 3p 4f (79%) +466(10%) +484(5%) 3F2 2 138 869.0 2 164 303.0 (−25 433) TN
482 3s2 3p 4f (90%) 1G4 2 185 600.0 ± −1 2 212 351.0 (−26 751)

Notes. The first column indicates the (unique) level index, and the second the configuration. The third column indicates the mixing of the levels. For example, level No. 3 is due by 84% to the 3P2 and by 12% to the 1D2 (level No. 4). Level No. 7 is due by 82% to the 3s 3p33D1 and by 10% to level No. 23 (from the third configuration in energy order, the 3s2 3p 3d), the 3D1. Only the main contributing terms (above 10%) are listed. The fourth column indicates the dominant LSJ contribution to the level. The experimental level energies Eexp (cm-1) are shown in Col. 5 while Col. 6 lists those obtained from our scattering target Et. Values in parentheses indicate differences with Eexp. Only a selection of levels is shown, the lowest 27 and the few with known experimental energies. The experimental energies are from the NIST compilation, with a few exceptions: F98: Feldman et al. (1998); T06: Trigueiros et al. (2006), confirmed here; N indicates a level with a new experimental energy, and TN with a tentative new one.

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