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  • Title: (239)Pu, (240)Pu, and (241)Am determination in hot particles by low level gamma-spectrometry.
    Author: Jiménez-Ramos MC, Hurtado S, Chamizo E, García-Tenorio R, León-Vintró L, Mitchell PI.
    Journal: Environ Sci Technol; 2010 Jun 01; 44(11):4247-52. PubMed ID: 20441142.
    Abstract:
    A nondestructive method based on low-energy, high-resolution photon spectrometry is presented which allows accurate determination of (239)Pu, (240)Pu, and (241)Am (as a daughter of (241)Pu) activities in radioactive particles containing relatively high levels of plutonium isotopes. The proposed method requires only one measurement for the establishment of an absolute efficiency curve. Since the density and composition of the radioactive particles of interest may vary, a self-absorption correction is required for the accurate determination of isotopic activities and ratios. This correction is carried out for each individual particle using the convenient gamma-ray emissions of (241)Am.
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