; Xiang Wei
; Tan Xiaohua
; Dai Jingyi
; Cheng Liang] China Acad Engn Phys, Inst Elect Engn, Mianyang 621900, Peoples R China
; [Qin Xiubo] Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Anal Tech, Beijing 100049, Peoples R China
Effect of the D+ ion beam on Ti film is studied by radiating the Ti films with different energy D+ beams on electrostatic accelerator. Slow positron annihilation spectroscopy and SEM are used to characterize the films. With the D+ beam energy increases, the extent of radiation damage and the surface ablation of Ti films increase. The maximum of radiation damage locates at 0.3 mu m depth. The geometrical non-uniformity on original surface is the main reason for the ablation behavior on Ti films by inducing a selective ablation under radiation. Radiation damage and energy loss of D+ in Ti film are discussed in detail by the numerical simulation of the beam and the solid interaction. It shows that the maximum radiation damage is at 0.65 mu m depth and energy loss of D+ beam in Ti films accords with the experimental observation.