Radioactivities in returned lunar materials and in meteorites

Details Radioactivities in returned lunar materials and in meteorites Radioactivities in returned lunar materials and in meteorites

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986sao..reptr....f&link_type=abstract

Semiannual Progress Report, 1 Aug. 1985 - 31 Jul. 1986 Smithsonian Astrophysical Observatory, Cambridge, MA.

Astronomy and Astrophysics

Astrophysics

Carbon 14, Lunar Rocks, Lunar Soil, Meteorites, Radioactive Age Determination, Carbon Dioxide, Mass Spectroscopy, Proportional Counters

Scientific paper

A preliminary C-14 study on lunar soil was carried out with the University of Toronto Iso Trace accelerator mass spectrometer. This accelerator was recommended for C-14 work by Dr. R. Schneider of A.S. and E., who was the field engineer during the assemblage and start-up operation of the accelerator. After the preliminary study using CO2 from 10084,937 soil, which had previously been counted with low-level mini-proportional counters, it became clear that the Toronto accelerator could carry out C-14/C-13/C-12 ratio measurements on 1 gram meteorite and lunar samples and that the C-14 measurements are done with higher precision and better reliability than elsewhere. A collaborative program with the University of Toronto Iso Trace accelerator group, which is expected to be scientifically fruitful. Arrangements have been made for Dr. R.P. Beukens of the Toronto Accelerator Group to extract the carbon compounds from Antarctic meteorite and lunar samples and to convert the compounds to CO2. During the past two years, a uranium-series dating method was developed for polar ice, which method is being applied to ice from the Allan Hills site, Byrd core, and the Beardsmore glacier.

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