Codeposition of deuterium with BeO at elevated temperatures

The trapping of energetic deuterium codeposited with BeO has been measured on a silicon collector probe in the temperature range from room temperature to 800 K. Deuterium codeposits with BeO at room temperature at a ratio of 0.36. At elevated temperatures the amount of codeposited deuterium decreases. At 573 K the ratio D/BeO is 0.17 and decreases to 0.07 at 773 K. The thermal release of deuterium codeposited at room temperature begins at 400 K. At temperatures above 800 K all deuterium is released.