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Table 6
Contributions of the different surface reaction routes to OH and H2O formation after a coverage of 1 ML is reached, and the total produced water rate for dense clouds I and II for different values of kH2 + O.
| Cloud | H2 + O | H + O | H + HO2 | H + O3 | H + H2O2 | H + OH | H2 + OH | H2O prod. | ||
| → OH + H | → OH | → OH + OH | → OH + O2 | → OH + O | → H2O | → H2O + H | ||||
| k H2 + O | (s-1) | (%) | (%) | (%) | (%) | (%) | (%) | (%) | (ML kyr-1) | |
|
|
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| I | k exo.tunn. a | = 2.3 × 105 | 95.0 | 4.5 | ~0 | ~0 | ~0 | ~100 | ~0 | 0.19 |
| I | k exp.max. b | = 3.0 × 10-2 | 11.0 | 74.0 | 12.0 | 0.5 | 2.5 | 86.5 | 9.0 | 0.15 |
| I | k endo.tunn c | = 4.4 × 10-29 | 0 | 82.0 | 14.0 | 1.0 | 3.0 | 75.5 | 19.5 | 0.14 |
| II | k exo.tunn. a | = 2.3 × 105 | 98.5 | 1.5 | ~0 | 0 | ~0 | 99.0 | 1.0 | 0.54 |
| II | k exp.max. b | = 3.5 × 10-9 | 1.0 | 56.0 | 31.0 | 6.0 | 6.0 | 26.0 | 60.0 | 0.24 |
| II | k endo.tunn c | = 5.0 × 10-36 | 0 | 54.0 | 35.0 | 5.5 | 5.5 | 20.5 | 63.5 | 0.24 |
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