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

Research output: Contribution to journalArticle

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 languageEnglish (US)
Pages (from-to)248-254
Number of pages7
JournalUltramicroscopy
Volume159
DOIs
StatePublished - 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

Fingerprint Dive into the research topics of '<sup>12</sup>C/<sup>13</sup>C-ratio determination in nanodiamonds by atom-probe tomography'. Together they form a unique fingerprint.

  • Cite this