The analysis of comet mass spectrometric data

@article{Balm1991TheAO,
  title={The analysis of comet mass spectrometric data},
  author={Simon P. Balm and Jonathan P. Hare and Harold W. Kroto},
  journal={Space Science Reviews},
  year={1991},
  volume={56},
  pages={185-189}
}
The mass spectra from the Giotto PICCA experiment have been studied using computer simulations based on tabulated mass spectrometric data. It is shown that random mixtures of organic compounds give rise to mass spectra with peaks at ca. 45, 60, 75, 90, i.e. separated by ca 15 amu. In particular it is shown that the products of Urey-Miller type experiments give mass spectra which can match the observed Giotto data closely. The analysis indicates that the material consists mainly of C/H/O/N (i.e… 
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In situ measurements of the composition and spatial distribution of heavy thermal positive ions in the coma of comet Halley were made with the heavy-ion analyzer RPA2-PICCA aboard the Giotto spacecraft, suggesting the presence of chain molecules that are enriched in carbon, oxygen, and hydrogen, such as polyoxymethylene (polymerized formaldehyde), in comet Halary.
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