摘要

Based on the potential energy function which considers the nuclear motion and isotopic effect of DTO ( (X) over tilde (1) A(1)), the atomic and molecular reactive collision for O + DT has been studied by Monte-Carlo quasi-classical trajectory approach. It is shown that the reaction O + DT -> DTO with a long-lived complex compound has no threshold energy at low collision energy, which agrees with the potenfial surface. When the collision energy is higher than 209.2 kJ.mol(-1), the interchange reactions will start and then increase until DTO molecules are decomposed completely into D, T, O with the collision energy increasing. The interchange reactions O + DT(0, 0) - -> D + T and O + DT(0, 0) -> OT + D have corresponding threshold energies. The trajectories and collision section of interchange reactions show asymmetrical distribution which corresponds to the potential surface.