A laboratory study of water ice erosion by low-energy ions

Elena A. Muntean; Pedro Lacerda; Thomas A. Field; Alan Fitzsimmons; Wesley C. Fraser; Adam C. Hunniford; Robert W. McCullough

doi:doi:10.1093/mnras/stw1855

A laboratory study of water ice erosion by low-energy ions

Elena A. Muntean^*, Pedro Lacerda, Thomas A. Field, Alan Fitzsimmons, Wesley C. Fraser, Adam C. Hunniford, Robert W. McCullough

^*Corresponding author for this work

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

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Abstract

Water ice covers the surface of various objects in the outer Solar system.Within the heliopause, surface ice is constantly bombarded and sputtered by energetic particles from the solar wind and magnetospheres. We report a laboratory investigation of the sputtering yield of water ice when irradiated at 10 K by 4 keV singly (13C+, N+, O+, Ar+) and doubly charged ions (13C2+, N2+, O2+). The experimental values for the sputtering yields are in good agreement with the prediction of a theoretical model. There is no significant difference in the yield for singly and doubly charged ions. Using these yields, we estimate the rate of water ice erosion in the outer Solar system objects due to solar wind sputtering. Temperature-programmed desorption of the ice after irradiation with 13C+ and 13C2+ demonstrated the formation of 13CO and 13CO2, with 13CO being the dominant formed species.

Original language	English
Article number	stw1855
Pages (from-to)	3361-3367
Number of pages	7
Journal	Monthly Notices of the Royal Astronomical Society
Volume	462
Issue number	3
Early online date	30 Jul 2016
DOIs	https://doi.org/doi:10.1093/mnras/stw1855 https://doi.org/10.1093/mnras/stw1855
Publication status	Published - 01 Nov 2016

Keywords

Astrochemistry
Methods: laboratory: molecular
Molecular processes
Solid state: volatile

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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doi:10.1093/mnras/stw1855Licence: Unspecified
10.1093/mnras/stw1855

A laboratory study of water ice erosion by low-energy ions
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©C 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Final published version, 796 KBLicence: Unspecified

Cite this

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title = "A laboratory study of water ice erosion by low-energy ions",

abstract = "Water ice covers the surface of various objects in the outer Solar system.Within the heliopause, surface ice is constantly bombarded and sputtered by energetic particles from the solar wind and magnetospheres. We report a laboratory investigation of the sputtering yield of water ice when irradiated at 10 K by 4 keV singly (13C+, N+, O+, Ar+) and doubly charged ions (13C2+, N2+, O2+). The experimental values for the sputtering yields are in good agreement with the prediction of a theoretical model. There is no significant difference in the yield for singly and doubly charged ions. Using these yields, we estimate the rate of water ice erosion in the outer Solar system objects due to solar wind sputtering. Temperature-programmed desorption of the ice after irradiation with 13C+ and 13C2+ demonstrated the formation of 13CO and 13CO2, with 13CO being the dominant formed species.",

keywords = "Astrochemistry, Methods: laboratory: molecular, Molecular processes, Solid state: volatile",

author = "Muntean, {Elena A.} and Pedro Lacerda and Field, {Thomas A.} and Alan Fitzsimmons and Fraser, {Wesley C.} and Hunniford, {Adam C.} and McCullough, {Robert W.}",

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doi = "doi:10.1093/mnras/stw1855",

language = "English",

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TY - JOUR

T1 - A laboratory study of water ice erosion by low-energy ions

AU - Muntean, Elena A.

AU - Lacerda, Pedro

AU - Field, Thomas A.

AU - Fitzsimmons, Alan

AU - Fraser, Wesley C.

AU - Hunniford, Adam C.

AU - McCullough, Robert W.

PY - 2016/11/1

Y1 - 2016/11/1

N2 - Water ice covers the surface of various objects in the outer Solar system.Within the heliopause, surface ice is constantly bombarded and sputtered by energetic particles from the solar wind and magnetospheres. We report a laboratory investigation of the sputtering yield of water ice when irradiated at 10 K by 4 keV singly (13C+, N+, O+, Ar+) and doubly charged ions (13C2+, N2+, O2+). The experimental values for the sputtering yields are in good agreement with the prediction of a theoretical model. There is no significant difference in the yield for singly and doubly charged ions. Using these yields, we estimate the rate of water ice erosion in the outer Solar system objects due to solar wind sputtering. Temperature-programmed desorption of the ice after irradiation with 13C+ and 13C2+ demonstrated the formation of 13CO and 13CO2, with 13CO being the dominant formed species.

AB - Water ice covers the surface of various objects in the outer Solar system.Within the heliopause, surface ice is constantly bombarded and sputtered by energetic particles from the solar wind and magnetospheres. We report a laboratory investigation of the sputtering yield of water ice when irradiated at 10 K by 4 keV singly (13C+, N+, O+, Ar+) and doubly charged ions (13C2+, N2+, O2+). The experimental values for the sputtering yields are in good agreement with the prediction of a theoretical model. There is no significant difference in the yield for singly and doubly charged ions. Using these yields, we estimate the rate of water ice erosion in the outer Solar system objects due to solar wind sputtering. Temperature-programmed desorption of the ice after irradiation with 13C+ and 13C2+ demonstrated the formation of 13CO and 13CO2, with 13CO being the dominant formed species.

KW - Astrochemistry

KW - Methods: laboratory: molecular

KW - Molecular processes

KW - Solid state: volatile

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U2 - doi:10.1093/mnras/stw1855

DO - doi:10.1093/mnras/stw1855

M3 - Article

AN - SCOPUS:84989211033

VL - 462

SP - 3361

EP - 3367

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 3

M1 - stw1855

ER -

A laboratory study of water ice erosion by low-energy ions

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Thomas Field

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A laboratory study of water ice erosion by low-energy ions

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Thomas Field

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