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Measurements of Pu and Ra Isotopes in Soils and Sediments by AMS

Tims, Stephen; Hancock, Gary; Wacker, L.; Fifield, L Keith


Plutonium fallout from atmospheric nuclear weapons testing in the 1950s and 1960s constitutes an artificial tracer suitable for the study of recent soil erosion and sediment accumulation rates. Long-lived Pu isotopes provide an alternative tracer to the more widely used 137Cs (t1/2=30 a), the concentration of which is decaying at a rate that will limit its long-term application to these studies. For 239,240Pu, the sensitivity of AMS is more than an order of magnitude better than that afforded...[Show more]

CollectionsANU Research Publications
Date published: 2004
Type: Journal article
Source: Nuclear Instruments and Methods in Physics Research: Section B
DOI: 10.1016/j.nimb.2004.04.147


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