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Understanding heterogeneity in Genesis diamond-like carbon film using SIMS analysis of implants

Jurewicz, Amy J. G. and Burnett, Don S. and Rieck, Karen D. and Hervig, Richard and Friedmann, Tom A. and Williams, Peter and Daghlian, Charles P. and Wiens, Roger (2017) Understanding heterogeneity in Genesis diamond-like carbon film using SIMS analysis of implants. Journal of Materials Science, 52 (19). pp. 11282-11305. ISSN 0022-2461. PMCID PMC6979530.

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An amorphous diamond-like carbon film deposited on silicon made at Sandia National Laboratory by pulsed laser deposition was one of several solar wind (SW) collectors used by the Genesis Mission (NASA Discovery Class Mission #5). The film was ~1 μm thick, amorphous, anhydrous, and had a high ratio of sp^3–sp^2 bonds (>50%). For 27 months of exposure to space at the first Lagrange point, the collectors were passively irradiated with SW (H fluence ~2 × 10^(16) ions cm^(−2); He fluence ~8 × 10^(14) ions cm^(−2)). The radiation damage caused by the implanted H ions peaked at 12–14 nm below the surface of the film and that of He about 20–23 nm. To enable quantitative measurement of the SW fluences by secondary ion mass spectroscopy, minor isotopes of Mg (^(25)Mg and ^(26)Mg) were commercially implanted into flight-spare collectors at 75 keV and a fluence of 1 × 10^(14) ions cm^(−2). The shapes of analytical depth profiles, the rate at which the profiles were sputtered by a given beam current, and the intensity of ion yields are used to characterize the structure of the material in small areas (~200 × 200 ± 50 μm). Data were consistent with the hypothesis that minor structural changes in the film were induced by SW exposure.

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URLURL TypeDescription CentralArticle
Jurewicz, Amy J. G.0000-0002-3282-5782
Burnett, Don S.0000-0001-9521-8675
Hervig, Richard0000-0001-7892-5423
Wiens, Roger0000-0002-3409-7344
Additional Information:© The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Received: 28 January 2017. Accepted: 3 June 2017. First Online: 05 July 2017. SIMS analysis was supported by Arizona State University National SIMS facility, EAR0622775. Genesis mission funds include JPL sub-contract #1354958 and NASA LARS Grant #NNX14AF26G. We thank J. Ziegler, USNA Annapolis, for advice on SRIM, L. Williams for oversight using the ASU CAMECA IMS 6f, and Igor Veryovkin for his insight and helpful suggestions throughout all stages of this work. There are no conflicts of interest which might bias or otherwise influence this work by the authors.
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Issue or Number:19
PubMed Central ID:PMC6979530
Record Number:CaltechAUTHORS:20170707-084238214
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Official Citation:Jurewicz, A.J.G., Burnett, D.S., Rieck, K.D. et al. J Mater Sci (2017) 52: 11282.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:78833
Deposited By: Ruth Sustaita
Deposited On:07 Jul 2017 17:22
Last Modified:09 Mar 2020 13:18

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