Table 8
List of reactions and adopted rates at 10 K and adopted branching ratios for reactions with several output channels.
| Reaction | Rate coefficient (cm3 s-1) | Branching ratio | Reference |
|
|
|||
| CH3OH + OH → CH3O + H2O | k1 = 5 × 10-11 | rate at 50 K, Gómez Martín et al. (2014) | |
|
k3 = 5 × 10-8 | r = 0.25 | capture rate at 10 K (Appendix A) |
|
k4 = 6.7 × 10-6 | f = 0.06 | rate at 10 K, Geppert et al. (2006) |
|
k2 = 6 × 10-8 | capture rate at 10 K (Appendix A) | |
| CH3O + H → products | k5 = 3.3 × 10-11 | rate at 300 K, Baulch et al. (2005) | |
| H2CO + OH → HCO + H2O |  = 10-11 |
rate at 230 K, Baulch et al. (2005) | |
|
 = 7 × 10-8 |
capture rate at 10 K (Appendix A) | |
| H2COH+ + e− → HCO + H2 |  = 9.9 × 10-6 |
f′ = 0.10 | rate at 10 K, Hamberg et al. (2007) |
|
 = 5 × 10-8 |
capture rate at 10 K (Appendix A) | |
| HCO + H → products |  = 1.5 × 10-10 |
rate at 300 K, Baulch et al. (2005) | |
Notes. For reactions with several product channels, only the most relevant channel is given in the table, as well as the value of the branching ratio. The reaction rates listed should be understood as the rates of disappearance of the reactants. The value of the branching ratio f′ is uncertain, because the experimental measurement by Hamberg et al. (2007) only constrains it to be below 90%.
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