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Collings, M. P.; Dever, J. W.; Fraser, H. J.; McCoustra, M. R. S. and Williams, D. A.
(2003).
DOI: https://doi.org/10.1086/345389
Abstract
The adsorption and desorption of CO on and from amorphous H2O ice at astrophysically relevant temperatures has been studied using temperature programmed desorption (TPD) and reflection-absorption infrared spectroscopy (RAIRS). Solid CO is able to diffuse into the porous structure of H2O at temperatures as low as 15 K. When heated, a phase transition between two forms of amorphous H2O ice occurs over the 30–70 K temperature range, causing the partial collapse of pores and the entrapment of CO. Trapped CO is released during crystallization and desorption of the H2O film. This behavior may have a significant impact on both gas-phase and solid-phase chemistry in a variety of interstellar environments.
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About
- Item ORO ID
- 37221
- Item Type
- Journal Item
- ISSN
- 1538-4357
- Project Funding Details
-
Funded Project Name Project ID Funding Body Not Set Not Set UK Particle Physics and Astronomy Research Council (PPARC) - Keywords
- astrochemistry; infrared - ISM; ISM - lines and bands; ISM - molecules; line - profiles; methods - laboratory
- Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Copyright Holders
- © 2003 The American Astronomical Society.
- Depositing User
- Stephen Serjeant