Analysis of nuclide production in the MEGAPIE target

Konobeyev, A.Yu.; Fischer, U.; Zanini, L.

doi:10.1016/j.nima.2009.03.218

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…The MEGAPIE target has been irradiated for 123 days with an average current of 0.947 mA of 575 MeV protons. 12 During this period, the LBE exposed to the proton beam was continually pumped through the target system with a flow rate of 4 L/s, corresponding to velocities of 0.2 to 1.2 m/s in different zones and components. 11 After a decay period from 2006 to 2009, the target was cut in the Hot Cells of ZWILAG (interim storage facility in Switzerland), and the segments H01 up to H09 (Figure 1) were transferred to the PSI Hot-Laboratory to prepare samples for various chemical and material investigations.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

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Radiochemical Determination of Rare Earth Elements in Proton-Irradiated Lead–Bismuth Eutectic

et al. 2015

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Various types of proton-irradiated lead-bismuth eutectic (LBE) samples from the MEGAPIE prototype spallation target were analyzed concerning their content of (148)Gd, (173)Lu, and (146)Pm by use of α- and γ-spectrometry. A radiochemical separation procedure was developed to isolate the lanthanide fraction and to prepare thin samples for α-ray measurement. The results prove a substantial depletion of these three elements in bulk samples, whereas accumulation on the LBE/steel-interfaces was observed. The amount of material accumulated on surfaces was roughly estimated by relating the values measured on the sample surfaces to the total surface of the inner target walls. The amount of (148)Gd, (173)Lu, and (146)Pm was then quantified by summing up the contributions from every sample type. The results show a reasonable agreement with theoretical predictions. The obtained results are of utmost importance for the evaluation of the performance of high-power spallation targets, especially concerning the residual nuclide production, the physicochemical behavior of the produced radionuclides during operation, and in terms of an intermediate or final disposal.

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Section: ■ Experimental Sectionmentioning

confidence: 99%

“…The MEGAPIE target has been irradiated for 123 days with an average current of 0.947 mA of 575 MeV protons . During this period, the LBE exposed to the proton beam was continually pumped through the target system with a flow rate of 4 L/s, corresponding to velocities of 0.2 to 1.2 m/s in different zones and components .…”

Section: Experimental Sectionmentioning

confidence: 99%

Radiochemical Determination of Rare Earth Elements in Proton-Irradiated Lead–Bismuth Eutectic

et al. 2015

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The influence of impurities on the evaporation behavior of Po from liquid Pb–Bi eutectic at high temperatures

Zivadinovic,

Neuhausen,

Ivan

et al. 2024

J Radioanal Nucl Chem

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This study presents an in-depth analysis of the polonium evaporation from high-energy and high-intensity proton-irradiated liquid lead-bismuth eutectic. The applied experimental conditions closely mimic those encountered within an accelerator-driven nuclear reactor, particularly focusing on the interaction of other impurities with polonium. Utilizing proton-irradiated lead-bismuth eutectic with an impurity spectrum similar to that of a real reactor, this research establishes reliable data for the polonium evaporation in the presence of said impurities, employing the transpiration method. The results agree well with those of prior model experiments using pure lead-bismuth eutectic. This indicates that the other coexisting impurities have a negligible impact on the polonium evaporation. The good agreement of the experimental values with literature data emphasizes the reliability of the applied methods and the robustness of the current understanding. These findings have significant implications for the operation and safety assessment of heavy metal-cooled nuclear reactors and support the advancement of Generation IV accelerator-driven systems.

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Analysis of the 207Bi, 194Hg/Au and 173Lu distribution in the irradiated MEGAPIE target

Hammer

Neuhausen

Boutellier

et al. 2014

Journal of Nuclear Materials

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Analysis of nuclide production in the MEGAPIE target

Cited by 3 publications

References 20 publications

Radiochemical Determination of Rare Earth Elements in Proton-Irradiated Lead–Bismuth Eutectic

Radiochemical Determination of Rare Earth Elements in Proton-Irradiated Lead–Bismuth Eutectic

The influence of impurities on the evaporation behavior of Po from liquid Pb–Bi eutectic at high temperatures

Analysis of the 207Bi, 194Hg/Au and 173Lu distribution in the irradiated MEGAPIE target

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