导体及其周围电离气体电磁俘获的数值模拟

PLASMA TRAPPING OF EM-FIELDS NEAR THE SURFACE OF CONDUCTOR SURROUNDED BY IIONIZED GAS

介绍了圆柱导体周围稠密大气部分电离时导体对入射电磁场的散射特性的计算结果。采用了三维时域有限差分方法联合求解 Maxwell方程组和空气离子方程组。结果表明 ,导体周围气体电离等离子体层的存在严重影响电磁场的散射特性 ,即电子等离子体与导体形成了谐振结构 。

The method has been introduced to study plasma effects on incident electromagnetic fields near a conductor when surrounded by ionized gas. A code has been given to examine phenomena relating to electromagnetic fields interacting with a metallic surface and with the ambient atmosphere. An important result is that the plasma will affect the fields to the vicinity of the metal surface. The relevant physics is discussed and the results of a calculation are included.