Journal
ULTRAMICROSCOPY
Volume 159, Issue -, Pages 248-254Publisher
ELSEVIER
DOI: 10.1016/j.ultramic.2015.05.021
Keywords
Atom-probe tomography; Meteoritic nanodiamond; Presolar grains; Nucleosynthesis; FIB liftout
Categories
Funding
- NASA [NNX13AF53G]
- NSF-MRI program [DMR0420532]
- NRL-DURIP [N00014-0400798, N00014-0610539, N00014-0910781]
- MRSEC program at the Materials Research Center [NSF DMR-1121262]
- Nanoscale Science and Engineering Center at the International Institute for Nanotechnology [NSF EEC0647560]
- State of Illinois, through the International Institute for Nanotechnology
- Initiative for Sustainability and Energy at Northwestern
- NASA [NNX13AF53G, 474493] Funding Source: Federal RePORTER
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The astrophysical origins of similar to 3 nm-diameter meteoritic nanodiamonds can be inferred from the ratio of C-12/C-13. It is essential to achieve high spatial and mass resolving power and minimize all sources of signal loss in order to obtain statistically significant measurements. We conducted atom-probe tomography on meteoritic nanodiamonds embedded between layers of Pt. We describe sample preparation, atom-probe tomography analysis, 3D reconstruction, and bias correction. We present new data from meteoritic nanodiamonds and terrestrial standards and discuss methods to correct isotopic measurements made with the atom-probe tomograph. (C) 2015 Elsevier B.V. All rights reserved.
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