强电磁场中的带电粒子运动与辐射

带电粒子与电磁波自洽相互作用的哈密顿描述

Hamiltonian description of a self-consistent interaction between charged particles and electromagnetic waves

考虑了电磁平面波与同向传播的带电粒子束之间自洽相互作用的哈密顿描述。我们展示了如何运动可以减少到一个一维的哈密顿模型（在规范设置）从弗拉索夫麦克斯韦泊松括号。减少到这个范式的哈密顿模型使用李代数形式主义，使我们能够保持哈密顿在每一步的推导。

Exact Solution of Hartemann-Luhmann Equation of Motion for a Charged Particle interacting with an Intense Electromagnetic Wave/Pulse

We report an exact solution of the Hartemann-Luhmann equation of motion for a charged particle interacting with an intense electromagnetic wave/pulse. It is found that the radiation reaction force has a significant affect on the charged particle dynamics and the particle shows, on average, a net energy gain over a period of time. Further, using a MATHEMATICA based single particle code, the net energy gained by the particle is compared with that obtained using Landau-Lifshitz and Ford-O'connell equation of motion, for different polarizations of the electromagnetic wave. It is found that the ave…

Aspects of electromagnetic radiation reaction in strong fields

With the recent advances in laser technology, experimental investigation of radiation reaction phenomena is at last becoming a realistic prospect. A pedagogical introduction to electromagnetic radiation reaction is given with the emphasis on matter driven by ultra-intense lasers. Single-particle, multi-particle, classical and quantum aspects are all addressed.

Highly Radiating Charged Particles in a Strong Electromagnetic Field

We consider highly radiating ultra-relativistic electrons in a strong external electromagnetic field. High intensity radiative losses and consequent $e^+e^-$-pair production, appearing in the frame of quantum electrodynamics, determine indirectly mass operator of electrons in the strong field. We calculate a leading term of the mass operator at asymptotically high energies of electrons in a strong constant field. We do not use any perturbation theory based on a low ratio of this mass operator to the electron mass $m_e$, but only the original small parameter of quantum electrodynamics, the fine…

High order volume-preserving algorithms for relativistic charged particles in general electromagnetic fields

We construct high order symmetric volume-preserving methods for the relativistic dynamics of a charged particle by the splitting technique with processing. Via expanding the phase space to include time $t$, we give a more general construction of volume-preserving methods that can be applied to systems with time-dependent electromagnetic fields. The newly derived methods provide numerical solutions with good accuracy and conservative properties over long time of simulation. Furthermore, because of the use of processing technique the high order methods are explicit, and cost less than the method…

带电粒子分形分布的电磁场

Electromagnetic field of fractal distribution of charged particles

考虑了带电粒子分形分布的电场和磁场。用分数阶积分描述分形分布。分数次积分被认为是分形积分的近似。利用积分型麦克斯韦方程的分数阶推广，给出了均匀分形分布场的简单例子。导出了分形分布的电偶极矩和电四极矩。

超相对论电子与电磁波相互作用中的Lorentz-Abraham-Dirac与Landau-Lifshitz辐射摩擦力（精确解）

Lorentz-Abraham-Dirac vs Landau-Lifshitz radiation friction force in the ultrarelativistic electron interaction with electromagnetic wave (exact solutions)

当电子与强激光相互作用参数进入支配辐射反应区时，电子动力学发生了质的变化。无论是Lorentz-Abraham-Dirac形式的辐射摩擦力，还是Landau-Lifshitz形式的辐射摩擦力，都能得到非物理的逃逸解，而Landau-Lifshitz形式的辐射摩擦力对相对较低的电磁波振幅是有效的。本文的目的是找出朗道-李甫希兹辐射力在电磁波振幅和频率方面的适用性极限。对于这类精确解的带电粒子运动的非线性问题的时变电磁场的使用。

显式高阶辛积分器用于一般电磁场中带电粒子的动力学

Explicit high-order symplectic integrators for charged particles in general electromagnetic fields

本文提出显式高阶辛积分器，用于高效准确模拟非相对论带电粒子在静态和非静态电磁场中的动力学，通过两个例子验证其性能优于传统非辛方法。

电子-正电子对和场相干振荡的电磁和引力辐射

Electromagnetic and gravitational radiation from the coherent oscillation of electron-positron pairs and fields

结合粒子数守恒、能量动量守恒方程和麦克斯韦场方程，研究了电子、正电子对在外场中产生后随场的相干振荡和漂移。从振荡对的电流出发，我们得到了电磁偶极辐射的能谱。这种狭窄的光谱是如此奇特，以至于对这种辐射的检测可以识别强激光场中的电子对产生和振荡。我们还从振荡对和振荡场的能量动量张量得到了引力四极辐射的能谱。因此，我们在强激光场迅速发展的基础上讨论了引力波的产生。