The cosmic ray record in the San Juan Capistrano meteorite

Details The cosmic ray record in the San Juan Capistrano meteorite The cosmic ray record in the San Juan Capistrano meteorite

Mar 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978gecoa..42..241f&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 42, Mar. 1978, p. 241-250.

Computer Science

3

Abundance, Chondrites, Cosmic Rays, Particle Tracks, Radioactive Age Determination, Rare Gases, Ablation, Atmospheric Entry, Gas Analysis, Krypton Isotopes, Spallation, Xenon Isotopes

Scientific paper

Measurements of cosmic ray track densities, rare gas concentrations, and radioisotope activities on the same sample of the San Juan Capistrano (SJC) meteorite (March 15, 1973) were combined in order to obtain a consistent picture of the irradiation history of the meteorite. The latter was recovered in two fragments weighing 50.5 and 5.5 g, respectively, which were then sampled according to the objectives set forward. The preatmospheric size of SJC and the depth occupied by the sample in the preatmospheric body were determined within narrow limits. In addition, the study compared estimates of the cosmic ray exposure age as determined by various techniques and evaluated the amount of ablation undergone when SJC penetrated the earth's atmosphere.

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