A series of experiments on deuterium plasma interaction with a liquid metal GaInSn alloy have been carried out to investigate the Lorentz-force U x B-force) convection effects on particle recycling behavior over liquid metals under plasma bombardment. It has been found that deuterium recycling from the liquid is reduced, when forced convection is applied to the liquid. And deuterium recycling is reduced more as the current increases. A finite element analysis method has been applied to simulate the motion of the liquid and the deuterium transport process in the liquid. As a result, the deuterium transport in the liquid is accelerated by the convection.

Liquid metal; Hydrogen diffusion; Forced convection; Hydrogen recycling; Plasma facing material

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