Abstract and subjects
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Cs measurements were performed on a set of debris samples from the first nuclear test, Trinity. Debris from several locations around ground zero of the event were purified and analyzed for
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Cs by thermal ionization mass spectrometry (TIMS). The Cs-isotopic measurements presented here are the first high precision TIMS
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Cs measurements of trinitite from variable locations and cooling histories relative to ground zero. Our measurements show a large fractionation from the predicted fission yields, all with a relative enrichment in
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Cs.
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Cs ratios indicate that condensation times varied between different debris forms, however they are not consistent with an unfractionated decay to Cs from independent fission products. Variations in
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Cs ratios are observed with relative distance from ground zero as well as
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Cs heterogeneities between different trinitite lithologies within a single sample.