也谈带电粒子在电磁场中动态受力平衡条件  

On the equilibrium condition of forces experienced by a charged particle in electromagnetic field

作　　者：安树元[1] 叶坚[2] 

机构地区：[1]首都师范大学物理系,北京100037 [2]南京师范大学物理科学与技术学院,江苏南京210042

出　　处：《大学物理》2004年第4期16-17,共2页College Physics

摘　　要：电磁场中相对论带电粒子的经典轨道运动受到洛伦兹力和辐射阻尼力的影响,在一定条件下会达到受力平衡状态.基于洛伦兹-狄拉克方程,本文介绍了计及辐射阻尼力后电磁场中带电单粒子(包括导体中的自由电子)受力平衡条件的一种可能的相对论协变形式.The classical orbital motion of a relativistic charged particle in electromagnetic fields is influenced by the radiation damping force as well as the Lorentz force, and the particle may be in equilibrium of forces in certain conditions. Based on the Lorentz-Dirac equation, an equilibrium condition of forces in relativistic covariant form for a charged particle (it may be a free electron in conductor) in electromagnetic fields is presented with the radiation damping taken into account.

关 键 词：辐射阻尼 运动方程 受力平衡 相对论协变性 

分 类 号：O442[理学—电磁学]