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使用中红外和真空紫外光谱对一氧化碳：氨冰混合物进行系统研究 - 第1部分：热处理

Systematic investigation of CO : NH ice mixtures using mid-IR and VUV spectroscopy - part 1: thermal processing.

作者信息

James Rachel L, Ioppolo Sergio, Hoffmann Søren V, Jones Nykola C, Mason Nigel J, Dawes Anita

机构信息

School of Physical Sciences, The Open University Walton Hall Milton Keynes UK

School of Electronic Engineering and Computer Science, Queen Mary University of London Mile End Road London UK.

出版信息

RSC Adv. 2020 Oct 12;10(61):37515-37528. doi: 10.1039/d0ra05826b. eCollection 2020 Oct 7.

DOI:10.1039/d0ra05826b
PMID:35521284
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9057146/
Abstract

The adjustment of experimental parameters in interstellar ice analogues can have profound effects on molecular synthesis within an ice system. We demonstrated this by systematically investigating the stoichiometric mixing ratios of CO : NH ices as a function of thermal processing using mid-IR and VUV spectroscopy. We observed that the type of CO bonding environment was dependent on the different stoichiometric mixing ratios and that this pre-determined the NH crystallite structure after phase change. The thermal reactivity of the ices was linked to the different chemical and physical properties of the stoichiometric ratios. Our results provide new details into the chemical and physical properties of the different stoichiometric CO : NH ices enhancing our understanding of the thermally induced molecular synthesis within this ice system.

摘要

星际冰类似物中实验参数的调整会对冰系统内的分子合成产生深远影响。我们通过使用中红外和真空紫外光谱系统地研究了CO:NH冰的化学计量混合比随热处理的变化情况，从而证明了这一点。我们观察到，CO键合环境的类型取决于不同的化学计量混合比，并且这预先决定了相变后NH微晶的结构。冰的热反应性与化学计量比的不同化学和物理性质相关。我们的结果为不同化学计量比的CO:NH冰的化学和物理性质提供了新的细节，增强了我们对该冰系统内热诱导分子合成的理解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eef/9057146/fb9746414c07/d0ra05826b-f13.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eef/9057146/87774f0a9e03/d0ra05826b-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eef/9057146/e6d0249be7ed/d0ra05826b-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eef/9057146/f6eb467d6066/d0ra05826b-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eef/9057146/4a588f4cbf40/d0ra05826b-f10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7eef/9057146/1401030a6e50/d0ra05826b-f11.jpg
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