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

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.