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A Study on Hydrogen Transport in Liquid Metals under Steady State Plasma Bombardment

Hailin BI¹⁾, Yoshi HIROOKA^1,2) and Juro YAGI²⁾

1)

The Graduate University for Advanced Studies, Toki 509-5292, Japan

2)

National Institute for Fusion Science, Toki 509-5292, Japan

(Received 30 November 2015 / Accepted 3 February 2016 / Published 15 April 2016)

Abstract

Hydrogen Plasma-driven Permeation (PDP) experiments through two different liquid metal membranes: lithium and GaInSn have been conducted in the temperature range from 300 to 500 °C. A technique employing a mesh sheet to hold a liquid metal for PDP has been utilized for the first time. It has been found that PDP is surface recombination limited for lithium and is diffusion limited for GaInSn. Hydrogen surface recombination coefficients for liquid lithium and hydrogen diffusivity in GaInSn have been obtained respectively.

Copyright (c) 2016 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

liquid lithium, GaInSn, plasma-driven permeation, hydrogen plasma, recombination coefficient, diffusivity

DOI: 10.1585/pfr.11.2405026

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