论文标题
一种新的简单算法用于空间充电有限的排放
A new simple algorithm for space charge limited emission
论文作者
论文摘要
许多高功率电子设备都在其绘制的电流受到粒子的自我限制的状态下运行。这种空间充电限制的电流对数值建模构成了特殊的挑战，在该数值建模中，诸如过度排放或高斯定律之类的通用技术在计算上效率低下或产生非物理效应。在本文中，我们使用表面前面的电场值显示了一种算法，而不是试图将表面的磁场归零，这使该算法特别适合PIC算法的电磁和并行实现。我们展示了该算法如何在有限差异的框架内（用于静电和电磁学）。我们针对理论和以前的计算结果显示了几个1D和2D基准。最后，我们在3D中显示了13 GHz磁性隔热线振荡器中高功率微波生成的应用。
Many high power electronic devices operate in a regime where the current they draw is limited by the self-fields of the particles. This space-charge-limited current poses particular challenges for numerical modeling where common techniques like over-emission or Gauss Law are computationally inefficient or produce nonphysical effects. In this paper we show an algorithm using the value of the electric field in front of the surface instead of attempting to zero the field at the surface, making the algorithm particularly well suited to both electromagnetic and parallel implementations of the PIC algorithm. We show how the algorithm is self-consistent within the framework of finite difference (for both electrostatics and electromagnetics). We show several 1D and 2D benchmarks against both theory and previous computational results. Finally we show application in 3D to high power microwave generation in a 13 GHz magnetically insulated line oscillator.
