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带电粒子在磁场中匀速圆周运动时,由于磁场范围的限制,或者带电粒子的速度以及磁场强弱的不确定性,由此就会形成带电粒子运动的临界问题。此类问题要求能以动态的视角进行分析,并充分联系轨迹来寻找几何关系,进而探求问题的解决思路。我在学习这部分内容时总结出如下三种方法。一、放缩圆法当带电粒子的入射方向确定时,则其轨迹圆心肯定落在过入射点垂直于入射方向的射线上,但是如果轨迹半径无法确定,则所画出的圆也就可大可
Charged particles in the magnetic field uniform circular motion, due to the limitations of the magnetic field, or the speed of charged particles and the magnetic field strength of the uncertainty, which will form the critical issue of the movement of charged particles. Such questions require a dynamic perspective analysis, and full contact with the track to find the geometric relationship, and then explore the problem solving ideas. When I was studying this part, I concluded the following three methods. First, the defocus method When the charged particles to determine the direction of the incident, then the trajectory of the center of the circle must fall on the incident perpendicular to the incident direction of the ray, but if the trajectory radius can not be determined, the circle drawn can be large can