An inertial electrostatic confinement (IEC) device modeling and the effects of different cathode structures to the fields

摘要

A 3D electrostatic modeling of an inertial electrostatic confinement (IEC) fusion device has been realized. Finite element method is considered in order to identify the potential and electrical fields inside the spherical device. Two different material types are examined for the holder part of the cathode by com paring the field results. The different structures of cathode spheres are investigated for the determination of minimal and maximal field values; thereby the effect of structures on the fields and confinement pro cess has been estimated. Parallel to our previous study, the porcelain holder presents better homoge neous field and at the center of the inner sphere. In addition, an increase of vertical rings on the inner grid affects the bottom corner of electrical potential, thereby ions are scattered to the entire region of the inner grid. According to the analyzes, there should be an optimal number vertical rings for the cath ode grid structures so that one can achieve a better ion core at the middle of the grid for the confinement process.