12C/13C-ratio determination in nanodiamonds by atom-probe tomography

Josiah B. Lewis; Dieter Isheim; Christine Floss; David N Seidman

doi:10.1016/j.ultramic.2015.05.021

¹²C/¹³C-ratio determination in nanodiamonds by atom-probe tomography

Josiah B. Lewis^*, Dieter Isheim, Christine Floss, David N Seidman

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article

16 Scopus citations

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)
Pages (from-to)	248-254
Number of pages	7
Journal	Ultramicroscopy
Volume	159
DOIs	https://doi.org/10.1016/j.ultramic.2015.05.021
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

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10.1016/j.ultramic.2015.05.021

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Lewis, J. B., Isheim, D., Floss, C., & Seidman, D. N. (2015). ¹²C/¹³C-ratio determination in nanodiamonds by atom-probe tomography. Ultramicroscopy, 159, 248-254. https://doi.org/10.1016/j.ultramic.2015.05.021

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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.",

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AU - Seidman, David N

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KW - FIB liftout

KW - Meteoritic nanodiamond

KW - Nucleosynthesis

KW - Presolar grains

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