Fundamental studies of the cluster ion bombardment of water ice

Christopher Szakal; Joseph Kozole; Nicholas Winograd

doi:10.1016/j.apsusc.2006.02.208

Fundamental studies of the cluster ion bombardment of water ice

Christopher Szakal, Joseph Kozole, Nicholas Winograd

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

16 Scopus citations

Abstract

The fundamental sputtering properties of water ice are of interest for molecular depth profiling of biological samples in their native environment. We report on a method of studying amorphous water ice films of precise thicknesses in which pure water vapor is condensed onto a pre-cooled, silver-coated quartz crystal microbalance (QCM). This scheme allows for the determination of water ice sputter yields for any primary projectile as well as providing a means for studying escape depths of atoms and molecules beneath the deposited water ice layer. Specifically, we find a removal of approximately 2500 water molecule equivalents/20 keV C ₆₀ ⁺ projectile with an underlying silver ion escape depth of 7.0 Å.

Original language	English (US)
Pages (from-to)	6526-6528
Number of pages	3
Journal	Applied Surface Science
Volume	252
Issue number	19
DOIs	https://doi.org/10.1016/j.apsusc.2006.02.208
State	Published - Jul 30 2006

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.apsusc.2006.02.208

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title = "Fundamental studies of the cluster ion bombardment of water ice",

abstract = " The fundamental sputtering properties of water ice are of interest for molecular depth profiling of biological samples in their native environment. We report on a method of studying amorphous water ice films of precise thicknesses in which pure water vapor is condensed onto a pre-cooled, silver-coated quartz crystal microbalance (QCM). This scheme allows for the determination of water ice sputter yields for any primary projectile as well as providing a means for studying escape depths of atoms and molecules beneath the deposited water ice layer. Specifically, we find a removal of approximately 2500 water molecule equivalents/20 keV C 60 + projectile with an underlying silver ion escape depth of 7.0 {\AA}.",

author = "Christopher Szakal and Joseph Kozole and Nicholas Winograd",

note = "Funding Information: The authors would like to thank Tim Tighe for metal deposition on the QCM crystal, Andreas Wucher and Barbara Garrison for discussions about this study, and partial funding for this research from the National Institutes of Health, National Science Foundation, and the American Chemical Society, Division of Analytical Chemistry Fellowship, sponsored by the Society for Analytical Chemists of Pittsburgh.",

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doi = "10.1016/j.apsusc.2006.02.208",

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T1 - Fundamental studies of the cluster ion bombardment of water ice

AU - Szakal, Christopher

AU - Kozole, Joseph

AU - Winograd, Nicholas

N1 - Funding Information: The authors would like to thank Tim Tighe for metal deposition on the QCM crystal, Andreas Wucher and Barbara Garrison for discussions about this study, and partial funding for this research from the National Institutes of Health, National Science Foundation, and the American Chemical Society, Division of Analytical Chemistry Fellowship, sponsored by the Society for Analytical Chemists of Pittsburgh.

PY - 2006/7/30

Y1 - 2006/7/30

N2 - The fundamental sputtering properties of water ice are of interest for molecular depth profiling of biological samples in their native environment. We report on a method of studying amorphous water ice films of precise thicknesses in which pure water vapor is condensed onto a pre-cooled, silver-coated quartz crystal microbalance (QCM). This scheme allows for the determination of water ice sputter yields for any primary projectile as well as providing a means for studying escape depths of atoms and molecules beneath the deposited water ice layer. Specifically, we find a removal of approximately 2500 water molecule equivalents/20 keV C 60 + projectile with an underlying silver ion escape depth of 7.0 Å.

AB - The fundamental sputtering properties of water ice are of interest for molecular depth profiling of biological samples in their native environment. We report on a method of studying amorphous water ice films of precise thicknesses in which pure water vapor is condensed onto a pre-cooled, silver-coated quartz crystal microbalance (QCM). This scheme allows for the determination of water ice sputter yields for any primary projectile as well as providing a means for studying escape depths of atoms and molecules beneath the deposited water ice layer. Specifically, we find a removal of approximately 2500 water molecule equivalents/20 keV C 60 + projectile with an underlying silver ion escape depth of 7.0 Å.

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EP - 6528

JO - Applied Surface Science

JF - Applied Surface Science

IS - 19

ER -

Fundamental studies of the cluster ion bombardment of water ice

Abstract

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