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Table 3
Variation in the column density of the parental molecules due to electron irradiation.
| Molecule | Initial column density (Ni) | Final column density (Nf) | Destroyed molecules [%] | |
| (molecule cm-2) | (molecule cm-2) | |||
|
|
||||
| H2O | (40 ± 7)×1016 | (32 ± 6)×1016 | 20 | |
| CO2 | (5.4 ± 1.0)×1016 | (3.7 ± 0.7)×1016 | 31 | |
| CH4 | (1.7 ± 0.3)×1016 | (1.1 ± 0.2)×1016 | 35 | |
| CH3OH | (0.9 ± 0.2)×1016 | (0.5 ± 0.1)×1016 | 44 | |
| NH3 | (1.3 ± 0.2)×1016 | (0.5 ± 0.1)×1016 | 61 | |
Notes. The band strength values used to calculate the column densities are shown in Table 2.
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