Formation mechanism of formaldehyde and methanol by the addition of hydrogen atoms to CO on amorphous icy grains

Details Formation mechanism of formaldehyde and methanol by the addition of hydrogen atoms to CO on amorphous icy grains Formation mechanism of formaldehyde and methanol by the addition of hydrogen atoms to CO on amorphous icy grains

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004asthe..97..101w&link_type=abstract

The Astronomical Herald (ISSN 0374-2466), Vol. 97, No. 2, p. 101 - 106 (2004)

Mathematics

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Formaldehyde, Methanol, Formation, Molecular Clouds

Scientific paper

Formations of formaldehyde and methanol by the successive addition of hydrogen atoms to CO molecules in H2O-CO ice were measured at 10, 15, and 20K. The maximum yield of CH3OH was obtained at 15K followed by at 10K. At 20K, the yield of CH3OH was significantly smaller than those at 10 and 15K probably due to a low sticking probability of hydrogen at around 20K. The result indicates that the abundances of H2CO and CH3OH in a molecular cloud are strongly dependent on the temperature of dust as well as the flux of atomic hydrogen.

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