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Table 1.
Energy levels (in eV) and lifetimes (in s) for the ground and 3s2 3p5 3d configurations of Fe8+.
| Energy levels |
Lifetimes |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| Index | Term | J | NIST | Single | CI | Single | CI | ||
| 0 | 1S | 0 | – | −3.4027+4 | −3.4033+4 | ∞ | ∞ | ||
| 1 | 3P | 0 | 5.031+1 | 4.962+1 | 5.073+1 | ∞ | ∞ | ||
| 2 | 3P | 1 | 5.062+1 | 4.994+1 | 5.105+1 | 6.34−8 | 7.17−8 | ||
| 3 | 3P | 2 | 5.129+1 | 5.062+1 | 5.171+1 | 1.23−2 | 1.09−2 | ||
| 4 | 3F | 4 | 5.279+1 | 5.208+1 | 5.347+1 | 1.30+3 | 4.93+2 | ||
| 5 | 3F | 3 | 5.323+1 | 5.254+1 | 5.391+1 | 7.42−1 | 7.95−1 | ||
| 6 | 3F | 2 | 5.379+1 | 5.312+1 | 5.447+1 | 2.04−1 | 1.98−1 | ||
| 7 | 3D | 3 | 5.649+1 | 5.620+1 | 5.729+1 | 3.02−2 | 3.26−2 | ||
| 8 | 3D | 1 | 5.711+1 | 5.649+1 | 5.749+1 | 1.08−2 | 1.05−2 | ||
| 9 | 3D | 2 | 5.736+1 | 5.684+1 | 5.790+1 | 3.63−9 | 3.69−9 | ||
| 10 | 1D | 2 | 5.663+1 | 5.716+1 | 5.816+1 | 8.62−3 | 9.76−3 | ||
| 11 | 1F | 3 | 5.776+1 | 5.746+1 | 5.855+1 | 6.77−3 | 7.41−3 | ||
| 12 | 1P | 1 | 7.247+1 | 7.519+1 | 7.389+1 | 3.08−12 | 4.17−12 | ||
Notes. Absolute energies for the ground level are given for the single and CI calculations. NIST values are taken from Kramida et al. (2018). Note that a ± b ≡ a × 10±b.
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