Table 2.
Level energies and ionization potential (IP; in eV) for the isolated atom (IA) and screened atom of C5+ embedded in carbon plasmas at an electron temperature and density of 120 eV and 4.3 × 1022 cm−3 (A), 189 eV and 8.7 × 1022 cm−3 (B), 250 eV and 2.1 × 1023 cm−3 (C), 303 eV and 4.3 × 1023 cm−3 (D), and 373 eV and 1.1 × 1024 cm−3 (E).
| Level | Energy (eV) |
|||||
|---|---|---|---|---|---|---|
| IA (NIST) (a) | A | B | C | D | E | |
| 1s1/2 2S1/2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
 |
367.474 | 366.811 | 366.245 | 364.552 | 363.520 | … |
| 2s1/2 2S1/2 | 367.477 | 366.999 | 366.593 | 365.385 | 363.712 | … |
 |
367.533 | 367.057 | 366.650 | 365.431 | 364.135 | … |
| IP | 490.054 | 439.550 | 427.903 | 409.018 | 389.154 | 363.085 |
Notes. The temperature and electron-density values for carbon plasmas are deduced from the standard solar model (Bahcall & Ulrich 1988; Guenther et al. 1992).
The NIST values are listed for IA (Kramida et al. 2020).
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