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Fig. 1


Chemical species present on a grain surface of 10 K in monolayer (1 monolayer is a total coverage of the surface) as function of time (left panels). Fraction of newly formed oxygen-bearing molecules f(O) that are released into the gas phase in the form of other species (right panels). Top: temperature of the grain surface is set to 10 K. Bottom: temperature of the grain surface is set to 30 K.

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