Surface science investigations of photoprocesses in model interstellar ices

Thrower, J.D. and Collings, M.P. and McCoustra, M.R.S. and Burke, D.J. and Brown, W.A. and Dawes, A. and Holtom, P.D. and Fraser, H.J. (2008) Surface science investigations of photoprocesses in model interstellar ices. Journal of Vacuum Science and Technology A, 26 (4). pp. 919-924. ISSN 0734-2101 (http://dx.doi.org/10.1116/1.2834687)

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Abstract

The kinetic energy of benzene and water molecules photodesorbed from astrophysically relevant ices on a sapphire substrate under irradiation by a UV laser tuned to the S1←S0 →* transition of benzene has been measured using time-of-flight mass spectrometry. Three distinct photodesorption mechanisms have been identified-a direct adsorbate-mediated desorption of benzene, an indirect adsorbate-mediated desorption of water, and a substrate-mediated desorption of both benzene and water. The translational temperature of each desorbing population was well in excess of the ambient temperature of the ice matrix

  • Item type:Article
    ID code:19555
    Dates:
    Date
    Event
    July 2008
    Published
    Notes:Strathprints' policy is to record up to 8 authors per publication, plus any additional authors based at the University of Strathclyde. More authors may be listed on the official publication than appear in the Strathprints' record.
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Strathprints Administrator
    Date deposited:27 May 2010 16:59
    Last modified:11 Nov 2024 09:21
    URI:https://strathprints.strath.ac.uk/id/eprint/19555
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