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Table 1
Number of accelerated Λ-iterations needed to converge to a max | δn/n | ≤ 10-4 solution against the number of PRD subiterations for different model atoms, model atmospheres, and approximations for initial atomic level populations.
| Model atmosphere: | FAL-C | 1D Bifrost | |||
| initial populations: | LTE | zero | LTE | zero | |
| radiation | radiation | ||||
|
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| 5-level Mg ii | |||||
|
|
|||||
| PRD subiterations |
1 | – | – | – | – |
| 2 | 168 | 124 | 695 | 438 | |
| >3 | 167 | 123 | 694 | 437 | |
|
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|||||
| 6-level H i | |||||
|
|
|||||
| PRD subiterations |
1 | – | – | – | – |
| 2 | 247 | 141 | 922 | 532 | |
| >3 | 247 | 140 | 917 | 526 | |
Notes. A lack of convergence is indicated by “–”.
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