Cosmic Ray Production of Rare Gas Radioactivities and Tritium in Lunar Material

Details Cosmic Ray Production of Rare Gas Radioactivities and Tritium in Lunar Material Cosmic Ray Production of Rare Gas Radioactivities and Tritium in Lunar Material

Jan 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970sci...167..553s&link_type=abstract

Science, Volume 167, Issue 3918, pp. 553-555

Computer Science

2

Scientific paper

The argon radioactivities 37Ar and 39Ar were obtained by vacuum melting from interior and exterior portions of rock 10057 and from a portion of the fines from the bulk sample container. The release of argon and tritium as a function of the temperature was followed for the fine material. A comparison is made of the activities observed in the lunar samples with those expected from the spallation of iron, titanium, and calcium. From these data and the 38Ar content, the cosmic ray exposure age of rock 10057 is deduced as 110 × 106 years.

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