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Table C.2.
Timescales of the dominant processes at play.
| Processes | Interactions | Timescale |
|---|---|---|
| CO | ||
| Ionization | solar photons (Huebner et al. 1992) | 107 yr (at 45 au, ∝1/r2) |
| Dissociation | solar photons (Huebner & Mukherjee 2015) | 50 yr (at 45 au, ∝1/r2), 120 yr (at > 70 au) |
| Collisions | SW protons | 2.7 yr |
| Collisions | LISM protons | 1.7 yr |
| CO+ | ||
| Dissociation | ISM photons (Heays et al. 2017) | 305 yr (at > 40 au) |
| Collisions | SW protons | 24 min |
| Collisions | LISM protons | 15 min |
| C | ||
| Ionization | ISM photons (Heays et al. 2017) | 94 yr (at > 40 au) |
| O | ||
| Ionization | SW protons (Izmodenov et al. 1997) | 160 yr (at 45 au, ∝1/r2), 110 yr (at > 150 au) |
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