Hydrogenation of CO on pure solid CO and CO-H2O mixed ice

被引：175

作者：

Watanabe, N ^{[1
]}

Nagaoka, A ^{[1
]}

Shiraki, T ^{[1
]}

Kouchi, A ^{[1
]}

机构：

[1] Hokkaido Univ, Inst Low Temp Sci, Kita Ku, Sapporo, Hokkaido 0600819, Japan

来源：

ASTROPHYSICAL JOURNAL | 2004年 / 616卷 / 01期

关键词：

astrochemistry; dust; extinction; ISM : molecules; molecular processes;

D O I：

10.1086/424815

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a cold ( 30 K) atomic hydrogen beam, hydrogenation of CO on pure solid CO and CO-H2O mixed ice is investigated at temperatures below 20 K. Hydrogenation proceeds efficiently on both pure solid CO and CO-H2O mixed ice below 12 K, but the rate of reaction on pure CO decreases significantly at 15 K compared to CO-H2O mixed ice. Hydrogenation of CO at 12 K and above is found to be promoted by H2CO and H2O molecules on the CO surface.

引用

页码：638 / 642

页数：5

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