On the Measurement of Cosmogenic Radionuclides in Cometary Materials

Details On the Measurement of Cosmogenic Radionuclides in Cometary Materials On the Measurement of Cosmogenic Radionuclides in Cometary Materials

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997arcn.rept..183h&link_type=abstract

Analysis of Returned Comet Nucleus Samples, Proceedings of a Workshop held at Milpitas, California, 16-18 January, 1989. Compil

Computer Science

Comets, Cosmic Rays, Radioactive Isotopes, Comet Nuclei, Chemical Analysis, Cosmology, Surface Properties, Samples, Cometary Atmospheres, Galactic Structure

Scientific paper

Determinations of the cosmogenic nuclide concentrations in cometary material will help to define the recent surface history of the comet and its exposure to cosmic rays. In particular, the rates for the removal or mixing of surface material could be studied, and any variations in cosmic-ray intensity implied by the data could be used to infer orbital changes during the last few million years. The measurement of the shorter-lived isotopes poses technical challenges that should be addressed now. The measurement of longer-lived isotopes will be straightforward provided that rates of mass loss are not too high.

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