Abstract
This work describes a radiochemical separation procedure for the determination of gold (Au), platinum (Pt), tantalum (Ta), and tungsten (W) activation in the presence of fission products. Chemical separations result in a reduction in the minimum detectable activity by a factor of 287, 207, 141, and 471 for 182Ta, 187W, 197Pt, and 198Au respectively, with greater than 90% recovery for all elements. These results represent the highest recoveries and lowest minimum detectable activities for 182Ta, 187W, 197Pt, and 198Au from mixed fission-activation product samples to date, enabling considerable refinement in the measurement uncertainties for neutron fluences in highly complex sample matrices.
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The authors would like to acknowledge the U.S. Department of Energy’s National Nuclear Security Administration, Office of Defense Nuclear Nonproliferation Research and Development for funding this research under contract DE-AC05-76RL01830.
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Morrison, S.S., Clark, S.B., Eggemeyer, T.A. et al. Activation product analysis in a mixed sample containing both fission and neutron activation products. J Radioanal Nucl Chem 314, 2501–2506 (2017). https://doi.org/10.1007/s10967-017-5563-9
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DOI: https://doi.org/10.1007/s10967-017-5563-9