论文标题
血浆模拟的分析鲍里斯推杆
An Analytic Boris Pusher for Plasma Simulation
论文作者
论文摘要
本文讨论了如何改善用于推进固定电磁场中相对论带电颗粒的鲍里斯推杆。首先，我们将更简单的解决方案得出了以前被其他人发现的缺陷。然后，我们得出了一个新的分析鲍里斯推动器，该推动器是对原始分式时间方案的次要修改，除了计算γ。该分析推动器假设粒子前进期间γ的变化很小。它不如Fei Li等人得出的推动器准确。 al。，但速度几乎是两倍。我们将讨论它何时有利，何时何时不利。
This paper discusses how to improve the Boris pusher used to advance relativistic charged particles in fixed electromagnetic fields. We first derive a simpler solution to a flaw previously discovered by others. We then derive a new analytic Boris pusher that is a minor modification to the original split-time scheme, except for the calculation of γ. This analytic pusher assumes that the change of γ during a particle advance is small. It is less accurate than the pusher derived by Fei Li et. al., but is nearly twice as fast. We will discuss when it is advantageous and when it is not.
