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  • Title: Improved determination of plutonium content and isotopic ratios in low activity samples by alpha-particle and underground L X-ray measurement.
    Author: Arnold D.
    Journal: Appl Radiat Isot; 2006; 64(10-11):1137-40. PubMed ID: 16621582.
    Abstract:
    The determination of the isotopic ratio of 239Pu and 240Pu by alpha-particle spectrometry is limited due to the small differences in the alpha-particle energies. But taking into account the differences in the L X-ray emission probabilities of the two plutonium isotopes, an additional L X-ray measurement allows the isotopic ratio of 239Pu and 240Pu to be determined. The sensitivity of this method can be improved, as described in this work, by performing the L X-ray measurement in an underground laboratory.
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