A low-temperature infrared study of the reactions of the stratospheric NOy reservoir species dinitrogen pentoxide with water ice, 80-160 K

Andrew B Horn, Thomas G Koch, Michael A Chesters, Martin McCoustra, John R Sodeau

Research output: Contribution to journalArticle

Abstract

The low-temperature chemistry of thin films of water ice and the important stratospheric NOy species dinitrogen pentoxide have been investigated in order to spectroscopically characterize one of the principal heterogeneous reactions that occurs on polar stratospheric cloud particles (PSCs). This contributes to stratospheric dentrification. Using reflection-adsorption infrared spectroscopy, we have observed the formation of both covalent and ionic forms of solid N2O5 on both ice and the clean substrate. Thermal evolution experiments suggest that the solid covalent phase, which can only be formed at the lowest temperatures (T
Original languageEnglish
Pages (from-to)946-951
Number of pages6
JournalJournal of Physical Chemistry
Volume98
Issue number3
DOIs
Publication statusPublished - Jan 1994

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