带电粒子在匀强磁场中的运动,如果初速度与磁场方向垂直,由洛仑兹力提供向心力,它将做匀速圆周运动。当粒子进入有界的磁场区域.通常不能作完整的圆周运动。解决此类问题必须借助形象思维,综合数理知识。本文就带电粒子在有界磁场中的运动求解类型举例分析。 The motion of charged particles in a uniform magnetic field, if the initial velocity is perpendicular to the direction of the magnetic field, is provided by the Lorentz force to the centripetal force, and it will perform a uniform circular motion. When a particle enters a bounded magnetic field, it is usually impossible to make a complete circular motion. To solve such problems, we must use image thinking to integrate mathematical knowledge. This article gives an example analysis of the type of motion solution of charged particles in a bounded magnetic field.