论文标题
粒子中粒子代码中的康普顿散射
Compton scattering in particle-in-cell codes
论文作者
论文摘要
我们提出了一种蒙特卡洛碰撞方案，该方案在粒子中的粒子代码中模拟了瘦小和光子之间的单个康普顿散射。康普顿散射的数值实现可以处理不同权重的宏观粒子，并保守每次碰撞中的动量和能量。我们的方案通过两种基准进行了确切的分析溶液的验证：通过具有各向同性光子气体的电子散射产生的逆康普顿光谱以及Kompaneets方程所描述的光子电子气体平衡。它为血浆现象的数值研究打开了新的机会，在系统中存在大量高能量光子的人群。
We present a Monte Carlo collisional scheme that models single Compton scattering between leptons and photons in particle-in-cell codes. The numerical implementation of Compton scattering can deal with macro-particles of different weights and conserves momentum and energy in each collision. Our scheme is validated through two benchmarks for which exact analytical solutions exist: the inverse Compton spectra produced by an electron scattering with an isotropic photon gas and the photon-electron gas equilibrium described by the Kompaneets equation. It opens new opportunities for numerical investigation of plasma phenomena where a significant population of high energy photons is present in the system.
