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Table 4
Desorption rate parameters for the five pure ices.
| ν0/1027 | E des | Estimated | |
| Species | (mol cm-2 s-1) | (K) | Edes (K) |
|
|
|||
| CO | 6.5 |
890 ± 35 | 899 |
| CO2 | 5.2 |
2605 |
2625 |
| NH3 | 2.1 |
2965 ± 80 | 3070 |
| CH3OH | 5.3 |
4355 |
4366 |
| H2O | 32.1 |
5165 ± 55 | 5172 |
Notes. Columns 2 and 3: Pre-exponential constants and binding energies assuming the Polanyi-Wigner desorption rate equation and zeroth order kinetics. Errors arise from the range of values leading to a similar χ2. Column 4: estimated binding energy from Eq. (4).
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