Characterization of ion induced damage as a function of depth using XRD

The ion induced damage as a function of depth in 35 MeV a irradiated D9 alloy samples with doses of 5 x 10¹⁵ He⁺²/cm², 6.4 x 10¹⁶He⁺²/cm² and 2 x 10¹⁷ He⁺²/cm² has been assessed using X-ray diffraction technique. The microstructural parameters such as domain size and microstrain have been evaluated using X-ray diffraction line profile analysis. At low dose, the microstructural parameters show a systematic variation as a function of depth, whereas as higher doses, they become more homogenous suggesting the importance of enhanced defect diffusion. (author)