Open Access
Table 1
Configurations included in the HFR atomic structure calculations for Nb I–IV ions.
| Nb I | Nb II | Nb III | Nb IV |
|---|---|---|---|
| Even parity | Even parity | Even parity | Even parity |
| 4d45s | 4d4 | 4d3 | 4d2 |
| 4d46s | 4d35s | 4d25s | 4d5s |
| 4d47s | 4d36s | 4d26s | 4d6s |
| 4d48s | 4d37s | 4d27s | 4d7s |
| 4d45d | 4d38s | 4d28s | 4d8s |
| 4d46d | 4d35d | 4d25d | 4d5d |
| 4d47d | 4d36d | 4d26d | 4d6d |
| 4d48d | 4d37d | 4d27d | 4d7d |
| 4d5 | 4d38d | 4d28d | 4d8d |
| 4d35s2 | 4d25s2 | 4d5s2 | 4d5g |
| 4d35s6s | 4d25s6s | 4d5s6s | 5s2 |
| 4d35s7s | 4d25s7s | 4d5s7s | 5p2 |
| 4d35s8s | 4d25s8s | 4d5s8s | 5d2 |
| 4d35s5d | 4d25s5d | 4d5s5d | 4f2 |
| 4d35s6d | 4d25s6d | 4d5s6d | 5s6s |
| 4d35s7d | 4d25s7d | 4d5s7d | 5s7s |
| 4d35s8d | 4d25s8d | 4d5s8d | 5s8s |
| 4d35p2 | 4d25p2 | 4d5p2 | 5s5d |
| 4d35p4f | 4d25p4f | 4d5p4f | 5s6d |
| 4d35p5f | 4d25p5f | 4d5p5f | 5s7d |
| 4d35p6f | 4d25p6f | 4d5p6f | 5s8d |
| 4d35p7f | 4d25p7f | 4d5p7f | 5s5g |
| 4d35p8f | 4d25p8f | 4d5p8f | 5s6g |
| 4d35d2 | 4d25d2 | 4d5d2 | 5s7g |
| 4d34f2 | 4d24f2 | 4d4f2 | 5s8g |
| 4d25s2 5d | 4d5s25d | 4d5s5d | |
| 4d25s2 6d | 4d5s26d | ||
| 4d25s2 7d | 4d5s27d | ||
| 4d25s2 8d | 4d5s28d | ||
| Odd parity | Odd parity | Odd parity | Odd parity |
| 4d45p | 4d35p | 4d25p | 4d5p |
| 4d46p | 4d36p | 4d26p | 4d6p |
| 4d47p | 4d37p | 4d27p | 4d7p |
| 4d48p | 4d38p | 4d28p | 4d8p |
| 4d44f | 4d34f | 4d24f | 4d4f |
| 4d45f | 4d35f | 4d25f | 4d5f |
| 4d46f | 4d36f | 4d26f | 4d6f |
| 4d47f | 4d37f | 4d27f | 4d7f |
| 4d48f | 4d38f | 4d28f | 4d8f |
| 4d35s5p | 4d25s5p | 4d5s5p | 5s5p |
| 4d35s6p | 4d25s6p | 4d5s6p | 5s6p |
| 4d35s7p | 4d25s7p | 4d5s7p | 5s7p |
| 4d35s8p | 4d25s8p | 4d5s8p | 5s8p |
| 4d35s4f | 4d25s4f | 4d5s4f | 5s4f |
| 4d35s5f | 4d25s5f | 4d5s5f | 5s5f |
| 4d35s6f | 4d25s6f | 4d5s6f | 5s6f |
| 4d35s7f | 4d25s7f | 4d5s7f | 5s6f |
| 4d35s8f | 4d25s8f | 4d5s8f | 5s6f |
| 4d35p6s | 4d25p6s | 4d5p6s | |
| 4d35p7s | 4d25p7s | 4d5p7s | |
| 4d35p8s | 4d25p8s | 4d5p8s | |
| 4d35p5d | 4d25p5d | 4d5p5d | |
| 4d35p6d | 4d25p6d | 4d5p6d | |
| 4d35p7d | 4d25p7d | 4d5p7d | |
| 4d35p8d | 4d25p8d | 4d5p8d | |
| 4d25s25p | 4d5s25p | ||
| 4d25s26p | 4d5s26p | ||
| 4d25s27p | 4d5s27p | ||
| 4d25s28p | 4d5s28p | ||
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