The rate of the radiative association reaction between CH3(+) and NH3 and its implications for interstellar chemistry
The rate of the radiative association reaction between CH3(+) and NH3 and its implications for interstellar chemistry
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CH3( ) 和 NH3 之间的辐射缔合反应速率及其对星际化学的影响
DOI：
10.1086/163179
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
E. Herbst
中科院分区：
文献类型：
--
作者：
E. Herbst
本文提出了一个存在一个或多个竞争性放热二元通道的体系的辐射缔合反应速率理论。利用该理论计算了CH3（+）与NH3之间的辐射缔合反应速率，该反应在致密星际云中合成CH3NH2中是重要的。尽管存在两个竞争性放热通道，但该反应被计算为具有大的速率系数。大的辐射缔合速率系数的原因是在占主导地位的二元出口通道的激活能势垒为2.3 eV。有人建议，其他各种辐射缔合反应，星际化学的重要性，也可以发生在低温下的大速率系数，尽管存在竞争性放热通道，如果类似的活化能障碍。18篇参考文献。
A theory of radiative association reaction rates for systems in which one or more competitive exothermic binary channels exist has been developed. The theory is utilized to calculate the rate of the radiative association reaction between CH3(+) and NH3, which is important in the synthesis of CH3NH2 in dense interstellar clouds. This reaction is calculated to have a large rate coefficient despite the existence of two competitive exothermic channels. The cause of the large radiative association rate coefficient is an activation energy barrier of 2.3 eV in the dominant binary exit channel. It is suggested that a variety of other radiative association reactions, of importance to interstellar chemistry, can also occur with large rate coefficients at low temperature despite the presence of competitive exothermic channels if similar activation energy barriers are present. 18 references.