INTERSTELLAR CARBON-CHEMISTRY - REACTION-RATES OF NEUTRAL ATOMIC CARBON WITH ORGANIC-MOLECULES

被引：105

作者：

CLARY, DC ^{[1
]}

HAIDER, N ^{[1
]}

HUSAIN, D ^{[1
]}

KABIR, M ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,DEPT CHEM,CAMBRIDGE CB2 1EW,ENGLAND

来源：

ASTROPHYSICAL JOURNAL | 1994年 / 422卷 / 01期

关键词：

ATOMIC DATA; ATOMIC PROCESSES; MOLECULAR DATA; MOLECULAR PROCESSES;

D O I：

10.1086/173737

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Experimentally measured rate constants for the chemical reactions of ground state carbon atoms with several alkenes and alkynes are found to have surprisingly large values (similar to 10(-10)-10(-9) cm(3) molecule(-1) s(-1)). The rate constants increase significantly with the size of the molecule. The experimental results agree well with a simple classical capture theory which predicts a dependence of the rate constant on N-1/3, where N is the number of carbon atoms in the molecule. The results suggest that the reactions of ground state carbon atoms with organic molecules should be included in the chemical reaction networks used to model interstellar clouds.

引用

页码：416 / 422

页数：7

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