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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >Interstellar matrices: the chemical composition and evolution of interstellar ices as observed by ISO
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Interstellar matrices: the chemical composition and evolution of interstellar ices as observed by ISO

机译：星际基质：ISO观测到的星际冰的化学成分和演化

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Matrix isolation techniques have been developed in the early sixties as a tool for studying the spectroscopic properties of out of equilibrium species (atoms, radicals, ions, reactive molecules), embedded in rare gas inert matrices at low temperatures. Cold interstellar grains surfaces are able to condense out gas phase molecules, routinely observed by radioastronomy. These grain 'mantles' can be considered as 'interstellar matrices'. However, these matrices are not clean and unreactive. They are made principally of dirty ices whose composition must be determined carefully to assess the importance of the solid state chemistry that takes place in the Interstellar Medium. Infrared spectroscopy, both in astronomy and in the laboratory, is the unique tool to determine the chemical composition of these ices. Astronomical spectra can directly be compared with laboratory ones obtained using classical matrix isolation techniques. Furthermore, dedicated experiments may be undertaken to further improve the understanding of the basic physico-chemical processes that take place in cosmic ices. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 71]
机译：六十年代初期，已经开发出基质分离技术，作为研究低温下嵌入稀有气体惰性基质中的非平衡物种（原子，自由基，离子，反应性分子）的光谱性质的工具。星际寒冷的谷物表面能够凝结气相分子，这是放射天文学通常观察到的。这些谷物“地幔”可被视为“星际基质”。但是，这些基质并非干净且无反应性。它们主要由脏冰制成，必须仔细确定其成分，以评估星际介质中发生的固态化学反应的重要性。天文学和实验室中的红外光谱法都是确定这些冰化学成分的独特工具。天文光谱可以直接与使用经典基质分离技术获得的实验室光谱进行比较。此外，可以进行专门的实验以进一步提高对宇宙冰中发生的基本物理化学过程的理解。 （C）2001 Elsevier Science B.V.保留所有权利。 [参考：71]

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