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- W1989071707 abstract "[1] Asteroidal/cometary impacts should have delivered a large amount of organic matter to Earth and other planets during the heavy bombardment period. Most of the delivered organics, however, would decompose through either severe shock heating upon impact or intense aerodynamic interaction with the ambient atmosphere. Here, we demonstrate that organics decomposed by intense aerodynamic interactions following oblique impacts will be converted to CN radicals under a wide range of redox conditions within primitive atmospheres. High-speed spectroscopic observations reveal that the nitrogen and the carbon comprising CN are derived from both the atmosphere and impact-fragmented projectile materials, respectively. The yield of CN relative to C2 (a direct vaporization product of projectile materials) increases with both impact velocity and the ratio of N2 partial pressure to the total atmospheric pressure. Such impact-driven cyanide synthesis may have significantly contributed to basic compounds (particularly nitrogen-rich ones) necessary for the origin of life." @default.
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- W1989071707 date "2009-10-31" @default.
- W1989071707 modified "2023-09-30" @default.
- W1989071707 title "Efficient cyanide formation due to impacts of carbonaceous bodies on a planet with a nitrogen-rich atmosphere" @default.
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- W1989071707 doi "https://doi.org/10.1029/2009gl040252" @default.
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