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Isotopic signatures and systematics of heavy elements in stardust silicon carbide grains

Avila, Janaina

Description

Isotopic and elemental abundance signatures of heavy elements determined in presolar stardust grains have provided important constraints on nucleosynthetic processes in individual stars. The present study reports on new analytical protocols developed to measure the isotopic compositions of heavy elements in large (> 4 urn) individual presolar stardust SiC grains by Sensitive High-Resolution Ion Microprobe (SHRIMP). Isotopic analyses of Ba, Eu, W, Pb, U and Th in stardust SiC grains extracted...[Show more]

CollectionsOpen Access Theses
Type: Thesis (PhD)
URI: http://hdl.handle.net/1885/149987

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