Abstract
The astrophysical origins of ~3nm-diameter meteoritic nanodiamonds can be inferred from the ratio of 12C/13C. 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.
Original language | English (US) |
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Pages (from-to) | 248-254 |
Number of pages | 7 |
Journal | Ultramicroscopy |
Volume | 159 |
DOIs | |
State | Published - Dec 1 2015 |
Keywords
- Atom-probe tomography
- FIB liftout
- Meteoritic nanodiamond
- Nucleosynthesis
- Presolar grains
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Instrumentation