Thermal desorption of deuterium from ion irradiated Be12Ti

Abstract Thermal desorption of deuterium from Be 12 Ti irradiated by D 2 + ions and microstructural change during irradiation were examined to understand deuterium retention and desorption properties. Total retention of deuterium in Be 12 Ti is much smaller than that of beryllium over a wide temperature range. For implantation of 1 × 10 21 D 2 + /m 2 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 Be 12 Ti is much lower than that in beryllium.