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Model calculations for the production of the short-lived nuclides 10 Be, 26 Al, 41 Ca and 53 Mn by solar energetic particles (SEP) in the asteroidal region during the early evolution of the solar system are presented. Based on the results of these calculations and the initial solar system abundances of the short-lived nuclides inferred from meteorite...
Fossil evidence for the presence of short-lived nuclides with half-life ranging from 100,000 years to ~100 million years (Ma) in the early solar system has been found in primitive meteorites. The nuclides with half-life less than a couple of million years ( 41 Ca, 26 Al, 10 Be, 60 Fe) must have been produced either shortly before or during the very...
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