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Nuclear supply chain innovation and collaboration: Keeping the nuclear supply chain viable through change
The next nuclear renaissance may be upon us, but with it comes a perfect storm. The industry is unprepared for a surge in demand for goods and services from both the existing light water fleet and the next generation of reactors. We are currently teetering on the edge of severe supply chain issues, but if the nuclear industry can understand the sources of our challenges, we can mitigate them.
P. Kim, Y. Sougawa, M. Nomura, M. Okamoto, Y. Fujii
Fusion Science and Technology | Volume 21 | Number 2 | March 1992 | Pages 833-838
Material; Storage and Processing | doi.org/10.13182/FST92-A29852
Articles are hosted by Taylor and Francis Online.
An RF discharge plasma device has been operated, to clarify the mechanism of plasma driven permeation ( PDP ) caused by the scrape-off plasma. As has been reported by us previously1, the electrons play a significant role to accelerate the PDP flux even in a low temperature plasma. Using the RF device, we measured the PDP fluxes of the deuterium as the function of bias voltage applied between the tested membrane ( iron, 0.05 mm in thickness ) and the plasma. The obtained PDP fluxes were found to strongly depend on the positive bias voltage. The Dα -emission intensity was also found to strongly depend on the positive bias voltage, and the profiles of the dependency are just consistent with the dependency of the PDP fluxes on the bias voltage. Based on the findings, it can be deduced that the acceleration of the PDP fluxes by the application of the positive bias voltage is caused by the neutral atoms of deuterium generated by the electron-impact dissociation of the deuterium molecules in the frontal region near the tested membrane.