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Table 4
OX radical photodesorption probabilities at Tice = 10 K (top) and 90 K (bottom) resulting from photoexcitation of a X2O (X = H, D) or XOY (HOD or DOH) molecule present in a specific monolayer of H2O ice.
| ML | OHdes/H2O∗ | ODdes/D2O∗ | ODdes/HOD∗ | OHdes/DOH∗ |
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| Tice = 10 K | ||||
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| 1 | 0.022 ± 1.9 × 10-3 | 0.065 ± 3.2 × 10-3 | 0.044 ± 2.0 × 10-3 | 0.071 ± 3.2 × 10-3 |
| 2 | 0.021 ± 1.8 × 10-3 | 0.035 ± 2.8 × 10-3 | 0.014 ± 1.2 × 10-3 | 0.033 ± 2.2 × 10-3 |
| 3 | (3.0 ± 0.7) × 10-3 | (4.0 ± 0.9) × 10-3 | (9.6 ± 3.0) × 10-4 | (5.1 ±0.9) × 10-3 |
| 4 | 0.00 | 0.00 | (1.9 ± 1.3) × 10-4 | 0.00 |
| ⟨MLs⟩ | 0.012 ± 6.9 × 10-4 | 0.026 ± 1.0 × 10-3 | 0.015 ± 1.2 × 10-3 | 0.027 ± 2.0 × 10-3 |
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| Tice = 90 K | ||||
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| 1 | 0.036 ± 1.8 × 10-3 | 0.065 ± 3.2 × 10-3 | 0.016 ± 1.6 × 10-3 | 0.039 ± 2.4 × 10-3 |
| 2 | 0.025 ± 1.9 × 10-3 | 0.050 ± 2.8 × 10-3 | 0.023 ± 1.9 × 10-3 | 0.045 ± 2.6 × 10-3 |
| 3 | (2.0 ± 0.7) × 10-3 | (5.0 ± 0.9) × 10-3 | (3.8 ± 0.8) × 10-3 | (7.4 ± 0.1) × 10-3 |
| 4 | 0.00 | (3.3 ± 2.4) × 10-4 | (1.6 ± 1.6) × 10-4 | (3.0 ± 2.2) × 10-4 |
| ⟨MLs⟩ | 0.015 ± 7.9 × 10-4 | 0.030 ± 4.0 × 10-4 | 0.011 ± 1.3 × 10-3 | 0.023 ± 2.0 × 10-3 |
Notes.ML1 is the top monolayer and ⟨MLs⟩ denotes the average over the top four monolayers.
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