2013Astronomy and AstrophysicsOpen access

Diffusion measurements of CO, HNCO, H2CO, and NH3in amorphous water ice

F. Mispelaer, P. Theulé, H. Aouididi, Jennifer A. Noble, Fabrice Duvernay, Grégoire Danger, P. Roubin, Ó. Morata, Tetsuo Hasegawa, T. Chiavassa

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Abstract

Context. Water is the major component of the interstellar ice mantle. In interstellar ice, chemical reactivity is limited by the diffusion of the reacting molecules, which are usually present at abundances of a few percent with respect to water.

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Context. Water is the major component of the interstellar ice mantle. In interstellar ice, chemical reactivity is limited by the diffusion of the reacting molecules, which are usually present at abundances of a few percent with respect to water.

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Available abstract

Context. Water is the major component of the interstellar ice mantle. In interstellar ice, chemical reactivity is limited by the diffusion of the reacting molecules, which are usually present at abundances of a few percent with respect to water.

Key concepts: Water ice, Interstellar ice, Diffusion, Astrochemistry, Amorphous solid, Molecule, Context (archaeology), Reactivity (psychology)

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