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. 2017 Nov 15;7:15629. doi: 10.1038/s41598-017-15771-1

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Backscattered electron images of shot S1233. The initial shock propagated from bottom to top in this image. (a) Low magnification view of the sample close to rear chamber wall. Dark gray fractured grains are olivine. Black areas are voids from plucking during polish. White areas are Ta. The finely-mixed hypoeutectic CuAl₂ and Al grain structure of the CuAl₅ alloy is visible at upper left. Injection of Ta and CuAl₅ material into fractures in olivine is evident. The inset is a schematic (to scale; 5 mm scale bar shown) of the experimental assembly. (b) Higher magnification view of mixed region along the right side-wall of exposed sample chamber showing amorphous oxide material between rounded blebs of Ta. (c) Further magnification (area of dashed red box in (b)) shows fine dispersion of Ta in amorphous Mg-Fe-Al-O phase.