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; P. Kendall; N. J. Mason; F. Jamme; H. J. Fraser; I. P. Clark; A. W. Parker

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, P. Kendall, N. J. Mason, F. Jamme, H. J. Fraser, I. P. Clark, A. W. Parker

School of Engineering & Physical Sciences

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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 p? p* 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. © 2008 American Vacuum Society.

Original language	English
Pages (from-to)	919-924
Number of pages	6
Journal	Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume	26
Issue number	4
DOIs	https://doi.org/10.1116/1.2834687
Publication status	Published - 2008

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Thrower et al, J. Vac. Sci. Technol. A, 2008, 26, 919-924Final published version, 871 KB

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Thrower, J. D., Collings, M. P., McCoustra, M. R. S., Burke, D. J., Brown, W. A., Dawes, A., Holtom, P. D., Kendall, P., Mason, N. J., Jamme, F., Fraser, H. J., Clark, I. P., & Parker, A. W. (2008). Surface science investigations of photoprocesses in model interstellar ices. Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, 26(4), 919-924. https://doi.org/10.1116/1.2834687

@article{35fed59c7c6c4041a8e775bfb08f8a18,

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 p? p* 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. {\textcopyright} 2008 American Vacuum Society.",

author = "Thrower, {J. D.} and Collings, {M. P.} and McCoustra, {M. R S} and Burke, {D. J.} and Brown, {W. A.} and A. Dawes and Holtom, {P. D.} and P. Kendall and Mason, {N. J.} and F. Jamme and Fraser, {H. J.} and Clark, {I. P.} and Parker, {A. W.}",

year = "2008",

doi = "10.1116/1.2834687",

language = "English",

volume = "26",

pages = "919--924",

journal = "Journal of Vacuum Science and Technology A",

issn = "0734-2101",

publisher = "AVS Science and Technology Society",

number = "4",

}

Thrower, JD, Collings, MP, McCoustra, MRS, Burke, DJ, Brown, WA, Dawes, A, Holtom, PD, Kendall, P, Mason, NJ, Jamme, F, Fraser, HJ, Clark, IP & Parker, AW 2008, 'Surface science investigations of photoprocesses in model interstellar ices', Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, vol. 26, no. 4, pp. 919-924. https://doi.org/10.1116/1.2834687

TY - JOUR

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 - Kendall, P.

AU - Mason, N. J.

AU - Jamme, F.

AU - Fraser, H. J.

AU - Clark, I. P.

AU - Parker, A. W.

PY - 2008

Y1 - 2008

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 p? p* 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. © 2008 American Vacuum Society.

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 p? p* 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. © 2008 American Vacuum Society.

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

Abstract

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