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| Abstract |
An apparatus for plasma-driven permeation experiment has been constructed, in which the plasma is produced by the RF-dischange. The permeation behavior of deuterium plasma through Ni membrane has been... examined and the significantly enhanced permeation flux has been confirmed. Following mechanisms have been proposed for the plasma-driven permeation of deuteriuln through Ni. (i) Neutral deuterium atoms make a predominant contribution to the permeation enhancement. (ii) Electrons also take part in the permeation enhancement by inducing the dissociation of deuterium molecules adsorbed on the Ni surface. The experimental conditions under which the permeation spike occurs have been examined and an origin of the permeation spike has ascribed to the enhancement of recombination on the up-stream surface which is brought about by the dischargecleaning of the Ni surface during the permeation experiment.show more
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