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

J. D. Thrower, A. G. M. Abdulgalil, M. P. Collings, M. R. S. McCoustra, D. J. Burke, W. A. Brown, A. Dawes, P. J. Holtom, P. Kendall, N. J. Mason, F. Jamme, H. J. Fraser, F. J. M. Rutten

Research output: Contribution to journalArticle

16 Citations (Scopus)

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 to derive 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. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3336466]

LanguageEnglish
Pages799-806
Number of pages8
JournalJournal of Vacuum Science and Technology A
Volume28
Issue number4
DOIs
Publication statusPublished - 2010

Fingerprint

Ice
Desorption
ice
Photons
desorption
Electrons
photons
electrons
Electron irradiation
Water
electron irradiation
Benzene
water
benzene
Irradiation
Kinetics
irradiation
cross sections
kinetics
coefficients

Keywords

  • temperature-programmed desorption
  • amorphous solid water
  • molecular-hydrogen
  • thermal-desorption
  • graphite surface
  • radiation-field
  • dense clouds
  • dust
  • photodesorption
  • emission
  • electron stimulated desorption
  • ice
  • interstellar matter
  • photon stimulated desorption
  • benzene
  • sapphire
  • amorphous silica

Cite this

Thrower, J. D., Abdulgalil, A. G. M., Collings, M. P., McCoustra, M. R. S., Burke, D. J., Brown, W. A., ... 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), 799-806. https://doi.org/10.1116/1.3336466
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. ; Rutten, F. J. M. / Photon- and electron-stimulated desorption from laboratory models of interstellar ice grains. In: Journal of Vacuum Science and Technology A. 2010 ; Vol. 28, No. 4. pp. 799-806.
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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 to derive 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. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3336466]",
keywords = "temperature-programmed desorption, amorphous solid water, molecular-hydrogen, thermal-desorption, graphite surface, radiation-field, dense clouds, dust, photodesorption, emission, electron stimulated desorption, ice, interstellar matter, photon stimulated desorption, benzene, sapphire, amorphous silica",
author = "Thrower, {J. D.} and Abdulgalil, {A. G. M.} and Collings, {M. P.} and McCoustra, {M. R. S.} and Burke, {D. J.} and Brown, {W. A.} and A. Dawes and Holtom, {P. J.} and P. Kendall and Mason, {N. J.} and F. Jamme and Fraser, {H. J.} and Rutten, {F. J. M.}",
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Thrower, JD, Abdulgalil, AGM, Collings, MP, McCoustra, MRS, Burke, DJ, Brown, WA, Dawes, A, Holtom, PJ, Kendall, P, Mason, NJ, Jamme, F, Fraser, HJ & Rutten, FJM 2010, 'Photon- and electron-stimulated desorption from laboratory models of interstellar ice grains' Journal of Vacuum Science and Technology A, vol. 28, no. 4, pp. 799-806. https://doi.org/10.1116/1.3336466

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.; Rutten, F. J. M.

In: Journal of Vacuum Science and Technology A, Vol. 28, No. 4, 2010, p. 799-806.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Photon- and electron-stimulated desorption from laboratory models of interstellar ice grains

AU - Thrower, J. D.

AU - Abdulgalil, A. G. M.

AU - Collings, M. P.

AU - McCoustra, M. R. S.

AU - Burke, D. J.

AU - Brown, W. A.

AU - Dawes, A.

AU - Holtom, P. J.

AU - Kendall, P.

AU - Mason, N. J.

AU - Jamme, F.

AU - Fraser, H. J.

AU - Rutten, F. J. M.

PY - 2010

Y1 - 2010

N2 - 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 to derive 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. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3336466]

AB - 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 to derive 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. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3336466]

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KW - amorphous solid water

KW - molecular-hydrogen

KW - thermal-desorption

KW - graphite surface

KW - radiation-field

KW - dense clouds

KW - dust

KW - photodesorption

KW - emission

KW - electron stimulated desorption

KW - ice

KW - interstellar matter

KW - photon stimulated desorption

KW - benzene

KW - sapphire

KW - amorphous silica

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DO - 10.1116/1.3336466

M3 - Article

VL - 28

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JF - Journal of Vacuum Science and Technology A

SN - 0734-2101

IS - 4

ER -