Thermal desorption of deuterium from ion irradiated Be12Ti

Thermal desorption of deuterium from Be12Ti irradiated by D2+ ions and microstructural change during irradiation were examined to understand deuterium retention and desorption properties. Total retention of deuterium in Be12Ti is much smaller than that of beryllium over a wide temperature range. For implantation of 1 × 1021 D2+/m2 at room temperature, 10% of implanted deuterium is retained and most of this is desorbed near 400 K, where a high-density of cavities were formed. In the case of beryllium, 83% of implanted deuterium is retained. These results indicate that deuterium trapping efficiency of cavity in the Be12Ti is much lower than that in beryllium.