The Simulation For The Motion Of Deuterium Ions On The Neutron Tube Accelerating Electric Field

At present, the neutron tube has been widely used in many fields. The currenttechnical specifications of the existing neutron tube have failed to meet the needs ofthe growth demands. Therefore, further development of the neutron tube technologyis very important. The main parts of the neutron tube include ion source, accelerator,air pressure system and the target. The accelerating system of the neutron tube candecide wether the paticles hit the target continuous. The purpose of this paper are theelectric field distribution and ions trajectory.The size of accelerating electrode is small and the voltage is high.The electricfield distribution of accelerating electrode and paticles trajectory are difficult tomeasure and observe through experiments.In this paper, finite element method hasbeen used to analysis the electric field distribution and ion beam trajectory. Finiteelement method has a large applications on the scientific research.The ANSYS10.0software from USA integrates a large number of mature and reliable finite elementalgorithm.In this paper, ANSYS10has been used to simulate the electric field distributionand ion beam trajectory. The results clearly show the electric field distribution and ionbeam trajectory of different sizes, electrode voltage.The simulation results show that the single-electrode electric field distributionhas the following characteristics:1. Electric field is strongest in the polar edge.2.Electric field is strongest near the poles and relatively weaker among the middle.Spatial electric field distribution shows "strong-weak-strong" distribution.3.Electric field will be leaked in the two holes of the polar, but the intensity is relativelysmall. Characteristics of the ion beam trajectory are as follows:1. The gap change hassignificant impact on ion trajectory.2. Accelerating voltage change have no effect onthe ion trajectory.3.The size of electrode have significant impact on ion trajectory.4.Deuterium ions trajectory and Tritium ion trajectory are the same.These conclusionsare consistent with the theoretical calculations...