scholarly journals VERIFICATION OF COLUMN DESIGN FOR RECOVERY OF Mo FROM LOW-ENRICHED URANIUM TARGET USING IRRADIATED TARGET TRACER SOLUTION

2014 ◽  
Author(s):  
Dominique Stepinski ◽  
Amanda Youker ◽  
George Vandegrift
2019 ◽  
Author(s):  
Susan Meriel Kloek Hanson ◽  
Anthony Douglas Pollington ◽  
Iain May ◽  
Melinda Suzanne Wren

2013 ◽  
Vol 255 ◽  
pp. 77-85 ◽  
Author(s):  
Kanwar Liaqat Ali ◽  
Akhlaque Ahmad Khan ◽  
Ahmad Mushtaq ◽  
Farhan Imtiaz ◽  
Maratab Ali Ziai ◽  
...  

2019 ◽  
Vol 93 (8) ◽  
pp. 2141-2154 ◽  
Author(s):  
Claude Vidaud ◽  
Mélanie Robert ◽  
Eduardo Paredes ◽  
Richard Ortega ◽  
Emilie Avazeri ◽  
...  

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.


Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 430
Author(s):  
Changyou Ding ◽  
Hong Lei ◽  
Hong Niu ◽  
Han Zhang ◽  
Bin Yang ◽  
...  

The residence time distribution (RTD) curve is widely applied to describe the fluid flow in a tundish, different tracer mass concentrations and different tracer volumes give different residence time distribution curves for the same flow field. Thus, it is necessary to have a deep insight into the effects of the mass concentration and the volume of tracer solution on the residence time distribution curve. In order to describe the interaction between the tracer and the fluid, solute buoyancy is considered in the Navier–Stokes equation. Numerical results show that, with the increase of the mass concentration and the volume of the tracer, the shape of the residence time distribution curve changes from single flat peak to single sharp peak and then to double peaks. This change comes from the stratified flow of the tracer. Furthermore, the velocity difference number is introduced to demonstrate the importance of the density difference between the tracer and the fluid.


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