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Photon- and electron-stimulated desorption from laboratory models of interstellar ice grains

Thrower, J. D.; Abdulgalil, A. G. M.; Collings, M. P.; McCoustra, M. R. S.; Burke, D. J.; Brown, W. A.; Dawes, A.; Holtom, P. J.; Kendall, P.; Mason, N. J.; Jamme, F.; Fraser, H. J. and Rutten, F. J. M. (2010). Photon- and electron-stimulated desorption from laboratory models of interstellar ice grains. Journal of Vacuum Science and Technology A, 28(4) pp. 799–806.

DOI (Digital Object Identifier) Link: https://doi.org/10.1116/1.3336466
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Abstract

The nonthermal desorption of water from ice films induced by photon and low energy electron irradiation has been studied under conditions mimicking those found in dense interstellar clouds. Water desorption following photon irradiation at 250 nm relies on the presence of an absorbing species within the H2O ice, in this case benzene. Desorption cross sections are obtained and used toderive first order rate coefficients for the desorption processes. Kinetic modeling has been used to compare the efficiencies of these desorption mechanisms with others known to be in operation in dense clouds.

Item Type: Journal Item
Copyright Holders: 2010 American Vacuum Society
ISSN: 0734-2101
Extra Information: Paper presented at 56th International Synposium & Exhibition, San Jose, CA, 8-12 November, 2009
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Faculty of Arts and Social Sciences (FASS)
Research Group: Physics
Item ID: 37282
Depositing User: Helen Fraser
Date Deposited: 04 Apr 2013 10:00
Last Modified: 02 May 2018 13:51
URI: http://oro.open.ac.uk/id/eprint/37282
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