Surface science investigations of photoprocesses in model interstellar ices

J.D. Thrower; M.P. Collings; M.R.S. McCoustra; D.J. Burke; W.A. Brown; A. Dawes; P.D. Holtom; H.J. Fraser

doi:10.1116/1.2834687

Surface science investigations of photoprocesses in model interstellar ices

J.D. Thrower, M.P. Collings, M.R.S. McCoustra, D.J. Burke, W.A. Brown, A. Dawes, P.D. Holtom, H.J. Fraser

Physics

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

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

Original language	English
Pages (from-to)	919-924
Number of pages	5
Journal	Journal of Vacuum Science and Technology A
Volume	26
Issue number	4
DOIs	https://doi.org/10.1116/1.2834687
Publication status	Published - Jul 2008

Keywords

model interstellar ices
astrophysics

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title = "Surface science investigations of photoprocesses in model interstellar ices",

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",

keywords = "model interstellar ices, astrophysics",

author = "J.D. Thrower and M.P. Collings and M.R.S. McCoustra and D.J. Burke and W.A. Brown and A. Dawes and P.D. Holtom and H.J. Fraser",

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language = "English",

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T1 - Surface science investigations of photoprocesses in model interstellar ices

AU - Thrower, J.D.

AU - Collings, M.P.

AU - McCoustra, M.R.S.

AU - Burke, D.J.

AU - Brown, W.A.

AU - Dawes, A.

AU - Holtom, P.D.

AU - Fraser, H.J.

N1 - 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.

PY - 2008/7

Y1 - 2008/7

N2 - 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

AB - 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

KW - model interstellar ices

KW - astrophysics

UR - http://dx.doi.org/10.1116/1.2834687

U2 - 10.1116/1.2834687

DO - 10.1116/1.2834687

M3 - Article

SN - 0734-2101

VL - 26

SP - 919

EP - 924

JO - Journal of Vacuum Science and Technology A

JF - Journal of Vacuum Science and Technology A

IS - 4

ER -

Surface science investigations of photoprocesses in model interstellar ices

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