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Table 10:

The level energies (Ryd) of Ni18+ from different calculations along with the compilation of NIST v3.

ID 		Level specification NISTa AS FAC GRASPb CHIANTIc

1 		${\rm 2s^2 2p^6 ~ ^1S_0}$   0.00000   0.0000  
2 ${\rm 2s^2 2p^5 3s ~ ^3P_2}$ 64.7479 64.7742 64.6221 64.6011 64.7263
3 ${\rm 2s^2 2p^5 3s ~ ^1P_1}$ 64.9059 64.9287 64.7897 64.7640 64.8740
4 ${\rm 2s^2 2p^5 3s ~ ^3P_0}$ 66.0459 66.0775 65.9187 65.9039 66.0385
5 ${\rm 2s^2 2p^5 3s ~ ^3P_1}$ 66.1407 66.1706 66.0193 66.0009 66.1251
6 ${\rm 2s^2 2p^5 3p ~ ^3S_1}$ 67.2696 67.3214 67.1650 67.1257 67.3018
7 ${\rm 2s^2 2p^5 3p ~ ^3D_2}$ 67.5241 67.5856 67.4291 67.3913 67.5202
8 ${\rm 2s^2 2p^5 3p ~ ^3D_3}$ 67.7229 67.7786 67.6269 67.5876 67.7173
9 ${\rm 2s^2 2p^5 3p ~ ^1P_1}$ 67.7987 67.8544 67.7073 67.6682 67.7830
10 ${\rm 2s^2 2p^5 3p ~ ^3P_2}$ 67.9647 68.0153 67.8694 67.8324 67.9334
11 ${\rm 2s^2 2p^5 3p ~ ^3P_0}$ 68.4879 68.5694 68.4048 68.3717 68.4646
12 ${\rm 2s^2 2p^5 3p ~ ^3D_1}$ 68.7711 68.8455 68.6775 68.6441 68.7870
13 ${\rm 2s^2 2p^5 3p ~ ^3P_1}$ 69.1003 69.1570 69.0003 68.9678 69.0941
14 ${\rm 2s^2 2p^5 3p ~ ^1D_2}$ 69.1402 69.2008 69.0411 69.0097 69.1369
15 ${\rm 2s^2 2p^5 3p ~ ^1S_0}$ 70.0837 70.2499 70.1372 70.1203 70.0599
16 ${\rm 2s^2 2p^5 3d ~ ^3P_0}$ 71.0603 71.1264 70.9484 70.9199 71.0761
17 ${\rm 2s^2 2p^5 3d ~ ^3P_1}$ 71.1490 71.2239 71.0377 71.0093 71.1644
18 ${\rm 2s^2 2p^5 3d ~ ^3P_2}$ 71.3137 71.4019 71.2055 71.1776 71.3240
19 ${\rm 2s^2 2p^5 3d ~ ^3F_4}$ 71.3092 71.4096 71.2029 71.1752 71.3248
20 ${\rm 2s^2 2p^5 3d ~ ^3F_3}$ 71.3607 71.4437 71.2575 71.2340 71.3676
21 ${\rm 2s^2 2p^5 3d ~ ^1D_2}$ 71.5080 71.5928 71.4098 71.3861 71.4998
22 ${\rm 2s^2 2p^5 3d ~ ^3D_3}$ 71.6041 71.7083 71.5079 71.4847 71.5973
23 ${\rm 2s^2 2p^5 3d ~ ^3D_1}$ 72.0028 72.1387 71.9452 71.9256 72.0192
24 ${\rm 2s^2 2p^5 3d ~ ^3F_2}$ 72.6505 72.7348 72.5485 72.5263 72.6617
25 ${\rm 2s^2 2p^5 3d ~ ^3D_2}$ 72.7265 72.8272 72.6191 72.6005 72.7346
26 ${\rm 2s^2 2p^5 3d ~ ^1F_3}$ 72.7796 72.8836 72.6726 72.6564 72.7920
27 ${\rm 2s^2 2p^5 3d ~ ^1P_1}$ 73.2823 73.4547 73.2548 73.2464 73.3387
28 ${\rm 2s 2p^6 3s ~ ^3S_1}$ 76.1637 76.0905 75.9685 75.9179 76.0394
29 ${\rm 2s 2p^6 3s ~ ^1S_0}$ 76.6922 76.6420 76.5136 76.4612 76.5453
30 ${\rm 2s 2p^6 3p ~ ^3P_0}$   78.8035 78.6856 78.6288 78.7562
31 ${\rm 2s 2p^6 3p ~ ^3P_1}$ 78.5640 78.8478 78.7275 78.6701 78.7972
32 ${\rm 2s 2p^6 3p ~ ^3P_2}$   79.1025 78.9785 78.9231 79.0459
33 ${\rm 2s 2p^6 3p ~ ^1P_1}$ 78.9731 79.2543 79.1374 79.0767 79.1836
34 ${\rm 2s 2p^6 3d ~ ^3D_1}$   82.5614 82.4049 82.3630 82.5247
35 ${\rm 2s 2p^6 3d ~ ^3D_2}$   82.5888 82.4203 82.3787 82.5451
36 ${\rm 2s 2p^6 3d ~ ^3D_3}$   82.6376 82.4501 82.4089 82.5807
37 ${\rm 2s 2p^6 3d ~ ^1D_2}$   83.0283 82.8611 82.8349 82.9545
38 ${\rm 2s^2 2p^5 4s ~ ^3P_2}$   87.4340 87.2557 87.1882 87.3495
39 ${\rm 2s^2 2p^5 4s ~ ^1P_1}$ 87.3449 87.4794 87.3103 87.2418 87.3995
40 ${\rm 2s^2 2p^5 4p ~ ^3S_1}$   88.4761 88.3083 88.2410 88.4117
41 ${\rm 2s^2 2p^5 4p ~ ^3D_2}$   88.5396 88.3755 88.3064 88.4710
42 ${\rm 2s^2 2p^5 4p ~ ^3D_3}$   88.6148 88.4565 88.3882 88.5530
43 ${\rm 2s^2 2p^5 4p ~ ^1P_1}$   88.6414 88.4864 88.4172 88.5784
44 ${\rm 2s^2 2p^5 4p ~ ^3P_2}$   88.6935 88.5414 88.4719 88.6285
45 ${\rm 2s^2 2p^5 4s ~ ^3P_0}$   88.7381 88.5592 88.4959 88.6644
46 ${\rm 2s^2 2p^5 4s ~ ^3P_1}$ 88.6207 88.7610 88.5863 88.5223 88.6908
47 ${\rm 2s^2 2p^5 4p ~ ^3P_0}$   89.0180 88.8778 88.8116 88.9147
48 ${\rm 2s^2 2p^5 4p ~ ^3D_1}$   89.8241 89.6556 89.5915 89.7666
49 ${\rm 2s^2 2p^5 4d ~ ^3P_0}$   89.8633 89.6923 89.6308 89.8053
50 ${\rm 2s^2 2p^5 4d ~ ^3P_1}$ 89.7142 89.9037 89.7307 89.6695 89.8418
51 ${\rm 2s^2 2p^5 4p ~ ^3P_1}$   89.9367 89.7797 89.7152 89.8858
52 ${\rm 2s^2 2p^5 4p ~ ^1D_2}$   89.9566 89.7997 89.7347 89.9049
53 ${\rm 2s^2 2p^5 4d ~ ^3F_4}$ 89.8783 89.9595 89.7800 89.7186 89.8919
54 ${\rm 2s^2 2p^5 4d ~ ^3F_3}$ 89.8974 89.9696 89.7988 89.7381 89.9055
55 ${\rm 2s^2 2p^5 4d ~ ^3P_2}$   89.9698 89.7945 89.7335 89.9028
56 ${\rm 2s^2 2p^5 4d ~ ^1D_2}$   90.0223 89.8526 89.7923 89.9538
57 ${\rm 2s^2 2p^5 4d ~ ^3D_3}$   90.0641 89.8883 89.8282 89.9894
58 ${\rm 2s^2 2p^5 4p ~ ^1S_0}$   90.1459 90.0186 89.9571 90.0498
59 ${\rm 2s^2 2p^5 4d ~ ^1P_1}$ 90.1334 90.2812 90.1093 90.0559 90.1881
60 ${\rm 2s^2 2p^5 4f ~ ^3D_1}$   90.6112 90.4620 90.3808 90.5167

Notes. a Sources of the NIST v3 are from the work of Sugar & Corliss (1985) and references therein. bGRASP data are from the work of Aggarwal & Keenan (2006). (c) Data in CHIANTI are from the work of Zhang et al. (1987).


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