Integrated separation scheme for measuring a suite of fission and activation products from a fresh mixed fission and activation product sample

Morley, Shannon M.; Seiner, Brienne N.; Finn, Erin C.; Greenwood, Lawrence R.; Smith, Steven C.; Gregory, Stephanie J.; Haney, Morgan M.; Lucas, Dawn D.; Arrigo, Leah M.; Beacham, Tere A.; Swearingen, K.; Friese, Judah I.; Douglas, Matthew; Metz, Lori A.

doi:10.1007/s10967-014-3826-2

Cited by 21 publications

(2 citation statements)

References 15 publications

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“…Samples were processed through an initial separation using Eichrom's UTEVA and TRU resin to remove actinides and select fission products from the sample prior to the REEs separation. This process has been published previously by Morley et al with a short summary provided here [5]. After adding the appropriate tracers and carriers to the aliquots of irradiated HEU solution, 2 mL of 0.6 M iron (II) sulfamate, 1 drop of 1 M ammonium thiocyanate as an indicator, and 1 mL of 1 M ascorbic acid were added.…”

Section: Separation Chemistry Using Uteva Tru and Ln Resinsmentioning

confidence: 99%

“…Previous efforts have developed methods to isolate and measure fission products of interest; however, isotopes with poor decay structure (i.e., short half-life, low branching ratio gamma emissions) have proven to be challenging [1][2][3][4][5][6]. Among these challenging isotopes are multiple REEs, including 91 Y, 144 Ce, 153 Sm, 155 Eu, 156 Eu, and 161 Tb.…”

Section: Introductionmentioning

confidence: 99%

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Separation of Lanthanide Isotopes from Mixed Fission Product Samples

et al. 2021

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The measurement of radioactive fission products from nuclear events has important implications for nuclear data production, environmental monitoring, and nuclear forensics. In a previous paper, the authors reported the optimization of an intra-group lanthanide separation using LN extraction resin from Eichrom Technologies®, Inc. and a nitric acid gradient. In this work, the method was demonstrated for the separation and quantification of multiple short-lived fission product lanthanide isotopes from a fission product sample produced from the thermal irradiation of highly enriched uranium. The separations were performed in parallel in quadruplicate with reproducible results and high decontamination factors for 153Sm, 156Eu, and 161Tb. Based on the results obtained here, the fission yields for 144Ce, 153Sm, 156Eu, and 161Tb are consistent with published fission yields. This work demonstrates the effectiveness of the separations for the intended application of short-lived lanthanide fission product analysis requiring high decontamination factors.

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Section: Separation Chemistry Using Uteva Tru and Ln Resinsmentioning

confidence: 99%