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Aerosol Formation and Hydrogen Co-Deposition by Colliding Ablation Plasma Plumes Y.Hirooka

Aerosol Formation and Hydrogen Co-Deposition by Colliding Ablation Plasma Plumes Y.Hirooka. • First-of-a-kind experiments on the aerosol formation by colliding ablation plasma plumes have been conducted using a laboratory laser-beam setup: LEAF-CAP.

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Aerosol Formation and Hydrogen Co-Deposition by Colliding Ablation Plasma Plumes Y.Hirooka

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  1. Aerosol Formation and Hydrogen Co-Deposition by Colliding Ablation Plasma Plumes Y.Hirooka •First-of-a-kind experiments on the aerosol formation by colliding ablation plasma plumes have been conducted using a laboratory laser-beam setup: LEAF-CAP. •Colliding ablation plumes of Li and Pb have demonstrated to form aerosol in the form of droplet, the diameter of which ranges from 100nm to 10mm. As opposed to that, colliding carbon plumes have shown the formation of CNTs and CMTs. •Ablated Li-deposits have been found to retain hydrogen as much as (H/Li)~0.3, which can be extended to a 10Hz power reactor with 1kJ/m2/pulse with such that 50kg-T/m2/day ! over a room temperature 1st wall.

  2. Improvement of compatibility of liquid metals Li and Pb-17LIMasatoshi KONDO • Major conclusions are as follows; • - Corrosion test technology for liquid Li and Pb-Li was established. • The corrosion characteristics of JLF-1 in static Li and Pb-Li were investigated. Then, we started to study about the corrosion in flowing condition. • Modeling of corrosion of JLF-1 in Li and Pb-Li was started. • Fundamental corrosion characteristics of anti corrosion coating in liquid Li and Pb-Li was studied. The issue is the peeling off of the coatings in liquid metals.

  3. Hydrogen transports at interface between gas bubbling and liquid breeders The experimental study on a hydrogen transport by a gas bubbling in Li, Pb-Li and Flinak was performed. Hydrogen gas at 1atm and high purity Ar gas was injected into the liquid breeders, and some bubbles were made using I shape injector. Then, the equilibrium pressure was measured at down stream of the apparatus using solid electrolyte sensor. The transient of the equilibrium pressure was modeled as a mass transfer equation. The overall mass transfer ratio for hydrogen charging and recovery by gas bubbling was obtained from the experimental results. The ratio was different for each process. The ratio for the recovery was about 10 times lower than that for the charging.

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