Nuclear fission product analysis using capillary separation techniques

1998 ◽  
Vol 236 (1-2) ◽  
pp. 149-153 ◽  
Author(s):  
G. L. Klunder ◽  
J. E. Andrews ◽  
M. N. Church ◽  
J. D. Spear ◽  
R. E. Russo ◽  
...  
2020 ◽  
Vol 26 (S2) ◽  
pp. 3086-3088
Author(s):  
Mukesh Bachhav ◽  
Lingfeng He ◽  
Joshua Kane ◽  
Xiang Liu ◽  
Jian Gan ◽  
...  

2015 ◽  
Vol 307 (3) ◽  
pp. 1735-1735
Author(s):  
Brienne N. Seiner ◽  
Jonathan L. Burnett ◽  
Andy R. King ◽  
Erin Finn ◽  
Lawrence R. Greenwood ◽  
...  

1970 ◽  
Vol 42 (2) ◽  
pp. 215-219 ◽  
Author(s):  
F. L. Lisman ◽  
W. J. Maeck ◽  
J. E. Rein

2015 ◽  
Vol 307 (3) ◽  
pp. 1729-1734 ◽  
Author(s):  
Brienne N. Seiner ◽  
Andy R. King ◽  
Erin Finn ◽  
Lawrence R. Greenwood ◽  
Lori A. Metz ◽  
...  

Separations ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 104
Author(s):  
Leah M. Arrigo ◽  
Jun Jiang ◽  
Zachary S. Finch ◽  
James M. Bowen ◽  
Staci M. Herman ◽  
...  

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.


2007 ◽  
Vol 85 (10) ◽  
pp. 702-713 ◽  
Author(s):  
Heming He ◽  
Peter G Keech ◽  
Michael E Broczkowski ◽  
James J Noël ◽  
David W Shoesmith

The influence of fission product doping on the structure, composition, and electrochemical reactivity of uranium dioxide has been studied using X-ray diffractometry (XRD), scanning electron microscopy (SEM/EDX), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). Experiments were conducted on SIMFUEL specimens with simulated burn-ups (increasing doping levels) of 1.5, 3.0, and 6.0 atom%. As the dopant level increased, the lattice contracted, suggesting the dominant formation of dopant-oxygen vacancy clusters. The smaller than expected lattice contraction can be attributed to the segregation of Zr (one of eleven added dopants) to ABO3 perovskite-type phases that SEM/EDX shows also contain Ba, Ce, and possibly some U. Raman spectroscopy shows that doping leads to a loss of cubic symmetry, possibly associated with tetragonal distortions. Raman mapping confirms this loss of cubic symmetry and suggests the specimen is not uniformly doped. Electrochemical experiments show that these distortions lead to a decrease in the oxidative dissolution rate of the UO2 with increased doping density.Key words: UO2, X-ray diffraction, electrochemistry, Raman spectroscopy, nuclear fission products.


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