Laboratory studies of formation of molecules on dust grain analogues under ISM conditions
Laboratory studies of formation of molecules on dust grain analogues under ISM conditions
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ISM 条件下尘粒类似物分子形成的实验室研究
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
V. Pirronello
中科院分区：
文献类型：
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作者：
G. Vidali;J. Roser;G. Manicó;V. Pirronello
[1]星际介质（ISM）的某些重要分子，如H2和CO2，被认为是在尘埃颗粒的表面形成的。我们描述的实验方法，我们用来研究形成的H2和CO2的尘埃颗粒类似物的条件近似的关键星际环境中发现的。通过使用国家的最先进的表面科学技术，我们获得的信息的分子形成反应的效率，反应动力学，和反应动力学。选定的结果上形成的分子氢表面的硅酸盐，无定形碳，无定形冰和二氧化碳的合成。然后，我们简要地展示了如何将这些结果已被应用到定量测定过程中发生的ISM。
[1] Certain important molecules of the interstellar medium (ISM), such as H2 and CO2, are believed to have been formed on surfaces of dust grains. We describe experimental methods that we used to study the formation of H2 and CO2 on dust grain analogues in conditions approximating the ones found in key interstellar environments. By using state-of-the-art surface science techniques we obtained information on the efficiency of the molecular formation reactions, the reaction kinetics, and the reaction dynamics. Selected results are presented on the formation of molecular hydrogen on surfaces of silicates, amorphous carbon, and amorphous ice and on the synthesis of carbon dioxide. We then briefly show how these results have been applied to the quantitative determination of processes occurring in the ISM.