Table 1
Level indices for the ground level (Level 1) and density sensitive metastable levels (Levels 2−5) from the Be-like to F-like isoelectronic sequences.
| Index | 1 | 2 | 3 | 4 | 5 | ||||||
|
|
|||||||||||
| Sequence | Conf. |
|
Conf. |
|
Conf. |
|
Conf. |
|
Conf. |
|
|
|
|
|||||||||||
| Be-like | 2s2 |
|
2s2p |
|
2s2p |
|
2s2p |
|
– | – | |
| B-like | 2s22p |
|
2s22p |
|
– | – | – | – | – | – | |
| C-like | 2s22p2 |
|
2s22p2 |
|
2s22p2 |
|
2s22p2 |
|
2s22p2 |
|
|
| N-like (Fe) | 2s22p3 |
|
2s22p3 |
|
2s22p3 |
|
2s22p3 |
|
2s22p3 |
|
|
| O-like (Fe) | 2s22p4 |
|
2s22p4 |
|
2s22p4 |
|
2s22p4 |
|
2s22p4 |
|
|
| F-like (Fe) | 2s22p5 |
|
2s22p5 |
|
– | – | – | – | – | – | |
Notes. “Conf.” is short for electron configuration. refers to the spectroscopic notations, where S is the total spin quantum number (2S + 1 is the spin multiplicity), L is the total orbital quantum number, and J is the total angular momentum quantum number.
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