带电粒子在磁镜中的重力漂移运动模拟研究  

Simulation study of movement of charged particle in a magnetic mirror with gravity drift

作　　者：全军 CHUEN Jun(School of Physics Science and Technology,Lingnan Normal University,Zhanjiang,Guangdong 524048,Chin)

机构地区：[1]岭南师范学院物理科学与技术学院,广东湛江524048

出　　处：《大学物理》2018年第2期34-37,共4页College Physics

基　　金：国家自然科学基金项目(11304276);广东省自然科学基金(2014A030307035;2017A030313022)资助

摘　　要：基于电磁学基本原理讨论了由两个相互平行的载流圆环构造的简单磁镜场的场分布以及均匀磁场中粒子运动的磁通量守恒量关系式.通过理论分析和数值模拟研究了在弱非均匀磁镜场中带电粒子的重力漂移运动,并运用重力漂移速度公式验证模拟结果,二者符合得较好,结果表明弱磁场下带电粒子所受重力会破坏带电粒子在磁镜场中运动的磁通量守恒关系.Based on the basic principle of electromagnetism,we discuss the distribution of magnetic field of themirror constructed by two parallel current carrying rings,as well the relationship of magnetic flux conservation forthe moving particle in uniform magnetic field. The gravity drift motion of particle in weak inhomogeneous magneticmirror field is studied by using theoretical analysis and numerical method. Our results consist with the formula ofgravity drift in magnetic field,which show that the existence of gravity violates the conservation of magnetic flux inweak magnetic field.

关 键 词：磁镜 磁镜场 带电粒子 重力漂移 

分 类 号：O441.6[理学—电磁学]