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Table 2
Level energies for Si iii.
| i | Conf. | Mixing | Lev. | E exp | E t | E t | E t | |
| Present | B80 | G99 | ||||||
|
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| 1 | 3s2 | (95%) | 1S0 | 0.0 | 0.0 | 0.0 (0) | 0.0 (0) | |
| 2 | 3s 3p | (98%) | 3P0 | 52 724.7 | 51 156.0 (1569) | 51 972.0 (753) | 50 901.0 (1824) | |
| 3 | 3s 3p | (98%) | 3P1 | 52 853.3 | 51 267.0 (1586) | 51 972.0 (881) | 51 010.0 (1843) | |
| 4 | 3s 3p | (98%) | 3P2 | 53 115.0 | 51 491.0 (1624) | 51 972.0 (1143) | 51 230.0 (1885) | |
| 5 | 3s 3p | (94%) | 1P1 | 82 884.4 | 84 060.0 (–1176) | 83 335.0 (–451) | 85 178.0 (–2294) | |
| 6 | 3p2 | (64%) +16(c3 33%) | 1D2 | 122 214.5 | 120 194.0 (2021) | 121 040.0 (1175) | 119 924.0 (2291) | |
| 7 | 3p2 | (98%) | 3P0 | 129 708.5 | 128 551.0 (1158) | 129 885.0 (–177) | 128 046.0 (1663) | |
| 8 | 3p2 | (98%) | 3P1 | 129 842.0 | 128 664.0 (1178) | 129 885.0 (–43) | 128 517.0 (1325) | |
| 9 | 3p2 | (98%) | 3P2 | 130 100.5 | 128 886.0 (1215) | 129 885.0 (216) | 128 735.0 (1366) | |
| 10 | 3s 3d | (99%) | 3D1 | 142 948.2 | 142 249.0 (699) | 141 956.0 (992) | 143 074.0 (–126) | |
| 11 | 3s 3d | (99%) | 3D2 | 142 945.8 | 142 252.0 (694) | 141 956.0 (990) | 143 078.0 (–132) | |
| 12 | 3s 3d | (99%) | 3D3 | 142 943.7 | 142 257.0 (687) | 141 956.0 (988) | 143 082.0 (–138) | |
| 13 | 3s 4s | (98%) | 3S1 | 153 377.0 | 151 563.0 (1814) | 150 999.0 (2378) | 153 355.0 (22) | |
| 14 | 3p2 | (76%) +15(c4 14%) | 1S0 | 153 444.2 | 155 103.0 (–1659) | 154 598.0 (–1154) | 156 125.0 (–2681) | |
| 15 | 3s 4s | (82%) +14(c13 14%) | 1S0 | 159 069.6 | 159 383.0 (–313) | 157 583.0 (1487) | 163 855.0 (–4785) | |
| 16 | 3s 3d | (62%) +6(c13 29%) | 1D2 | 165 765.0 | 168 327.0 (–2562) | 166 252.0 (–487) | 171 538.0 (–5773) | |
| 17 | 3s 4p | (98%) | 3P0 | 175 230.0 | 174 006.0 (1224) | 172 507.0 (2723) | 175 020.0 (210) | |
| 18 | 3s 4p | (98%) | 3P1 | 175 263.1 | 174 036.0 (1227) | 172 507.0 (2756) | 175 048.0 (215) | |
| 19 | 3s 4p | (98%) | 3P2 | 175 336.3 | 174 102.0 (1234) | 172 507.0 (2829) | 175 106.0 (230) | |
| 20 | 3s 4p | (94%) | 1P1 | 176 487.2 | 175 288.0 (1199) | 174 395.0 (2092) | 179 288.0 (–2801) | |
Notes. The experimental level energies Eexp (cm-1) are shown (see text), together with those obtained from our scattering target Et. Values in parentheses indicate differences with Eexp. B80: Baluja & Hibbert (1980); G99: Griffin et al. (1999). Only the lowest 20 levels are shown.
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