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Table 2.
Photon energies used in the PWPL approximation and their intended use cases.
| εγ [eV] | Physical effect | |
|---|---|---|
| FUV | 5.6–11.2 | Photo-electric heating |
| LW-low | 11.2+ | H2 photo-dissociation |
| LW-high | 13.6− | H2 photo-dissociation |
| HI-low | 13.6+ | H ionisation/heating |
| HI-high | 24.6− | H ionisation/heating |
| HeI-low | 24.6+ | H & He ionisation/heating |
| HeI-high | 54.4− | H & He ionisation/heating |
| HeII-low | 54.4+ | H, He & He+ ionisation/heating |
| HeII-high | 136.0 | H, He & He+ ionisation/heating |
| XUV | 500.0 | H, He & He+ ionisation/heating |
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