Fundamental insights in the field of cosmochemistry have come from the study of the abundances and isotopic compositions of trapped noble gases. A case in point is the discovery of presolar grains in primitive meteorites: isotope abundance anomalies in noble gases were known long before the discovery of presolar grains such as nanodiamonds, silicon carbide and graphite, and it was the search for the carrier phases of these anomalies that ultimately led to the identification and isolation of these types of grains (e.g., Anders and Zinner 1993; Ott 1993).

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Starting with the work of John Reynolds and his...

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