STUDIES ON 3D FUSION REACTIONS IN TiD_x UNDER ION BEAM IMPLANTATION

Abstract

With certain conditions for target-samples and beams, we have identified specific particles (e.g., 4.75MeV tritons and 3 He-particles, and 15.9 MeV deuterons) from 3D fusion reactions with yield ratios [3D]/[2D] on the order of 1E-4 to 1E-3, in contrary to the calculated [3D]/[2D] yield ratio of 1E-30 according to conventional random nuclear reaction theory 2,3) . The increasing trend of yield ratios in lower energy regions (less than 100 keV for deuteron) 4) , suggests that the enhanced 3D reactions were not attributed to the direct reactions with incident d-beam, but to the indirect 3D fusion out of the slowing down range of the beam.