Keywords:Helium retention, Simultaneous implantation of helium and hydrogen isotope, Interaction of helium and hydrogen isotope, Bubbles, TDS
Tungsten is the candidate for plasma facing materials (PFMs) in the fusion reactor. It will be simultaneously irradiated by hydrogen isotopes and helium (He) produced by D-T fusion reaction. In this study, simultaneous He-H implantation was performed and the retention behavior was evaluated by high temperature thermal desorption spectroscopy (HT-TDS). Experimental results showed that He retention behavior was affected by the incident hydrogen to a large extent.