带电粒子在喇叭形磁场中的运动分析

Analysis on Moving Charged Particles in the Trumpet Magnetic Field

将带电粒子在非均匀磁场中的运动看成是在均匀磁场中的回旋。进而描述磁场的非均匀性,具体的分析了仅有散度项、曲率项、梯度项不等于零的磁场。介绍一种常见的喇叭形非均匀磁场,讨论了带电粒子在喇叭形磁场中的螺旋轨道半径、纵向速度分量以及运动的角度与磁场的关系和磁约束原理。目的是加深带电粒子在非均匀磁场中运动的理解。

The moving of charged particle in the non uniform magnetic field is considered as cyclotron in the uniform magnetic field.Furthermore,the paper described the non uniform magnetic field and analyzed specifically the magnetic field which only has divide section,angularity section,gradient section that is not equal to zero.A kind of ordinary non uniform magnetic field which is called trumpet magnetic field was introduced.The relationship between the helix radius,the forehead velocity,the moving angle with the intensity of magnetic field were discussed in this paper.The principle of magnetic captivity was also discussed.It was aim at understanding about the moving of charged particle in the non uniform magnetic field thoroughly.