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Table 3:

Comparison between the calculated CO2 half-times involved in the methylammonium methylcarbamate (C) thermal formation and the calculated residence times of CO2 on water ice at different temperatures.
Temperature CO2 half-times to CO2 residence times
(K) C formation (yr) on water ice1 (yr)
50 $8\times10^{-2}$ $7\times10^{4}$
60 $2\times10^{-2}$ $5\times10^{0}$
70 $6\times10^{-3}$ $6\times10^{-3}$
80 $3\times10^{-3}$ $4\times10^{-5}$
90 $2\times10^{-3}$ $7\times10^{-7}$
100 $9\times10^{-4}$ $3\times10^{-8}$

Reference. (1) Sandford & Allamandola (1993).

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