Limited Effect of Twin Boundaries on Radiation Damage

Jin Gao, Zhi-Jun Liu, Fa-Rong Wan†

Fig.3 Cavities formed in the interior of the grain after 30 keV He ions irradiation at room temperature: a multifaceted shape with size smaller than 5 nm (measured by the distance shown in the micrograph); b hexagonal cavity with its facets aligned with the matrix. The FFT was superimposed in the inset in b