Simulation of motion of charged particles in inhomogeneous electromagnetic field based on Matlab

Electromagnetism is an important branch of physics. It is of great significance to study the motion of charged particles in the electromagnetic field. However, when solving complex physical problems, the electromagnetic field is often non-uniform, which makes the experiment difficult to operate and the phenomenon difficult to observe. To solve this problem, the simulation program is used to visualize the particle trajectory. Firstly, with the help of the powerful calculation and drawing functions of Matlab, the calculation program of charged particle trajectory based on Matlab is compiled. Then, with the help of Matlab App Designer,a simulation platform is built to visually present the trajectory of charged particles in the electromagnetic field. Finally, based on the principle of human-computer interaction, a simple and beautiful user interface is designed. The electric field parameters, magnetic field parameters and particle parameters in the interface can be adjusted by the user to simulate the trajectory of particles in various non-uniform fields. In the result part, the motion images of a single charged particle in the electromagnetic field under four different conditions are displayed. At the same time, the simulation App can also visualize the magnetic field lines and help users master important information about the magnetic field strength, direction and gradient.