Isotopic analysis of rare gases with a laser microprobe.

@article{Megrue1967IsotopicAO,
  title={Isotopic analysis of rare gases with a laser microprobe.},
  author={G H Megrue},
  journal={Science},
  year={1967},
  volume={157 3796},
  pages={1555-6}
}
A ruby-pulsed laser and high-sensitivity mass spectrometer are used to analyze isotopic abundances of rare gases from microgram samples of polished sections. The feasibility of the technique is demonstrated by the analysis of primordial helium and neon from the Kapoeta and Fayetteville meteorites.