PURPOSE:To enable dynamic treatment of the movement of charged particles in an electromagnetic field by subjecting the analysis area to element breakdown to treat the charge density of charged particles and current density as unknown quantities in each element. CONSTITUTION:Variations in density and momentum as element e, density rhoand momentum J, moves by outer force F for DELTAt seconds are determined. The shaded area portion of a diagram, i.e, (Vn.DELTAt).Lek, shows how much of charged particles in the element e are transferred to an adjacent element k by movement of element e: this results from a decrease in charge density and current density by Vn LekDELTAt/S(e) in charge density and current density of the element e. Therefore, it is calculated with respect to all the elements contacting the element e. This way of breaking the analysis area into elements to average for modelling in an element allows limit element method and boundary element method often used for the analysis of electromagnetic field to attain effects of charged particles. This process enables dynamic treatment of the movement of charged particles in an electromagnetic field.
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