中文摘要 本论文主要从不存在外加磁场的条件下,研究了电磁波入射到均匀等离子体中和非均匀等离子体中的吸收情况,初步分析了不同的参数对电磁波在等离子体中吸收特性的影响。 本文从等离子体均匀分布和非均匀分布两大方面,计算出电磁波在其中的吸收功率和入射功率的比的表达式。并借由这两个表达式,使用 Matlab 进行了数值模拟,分析了碰撞频率、等离子体密度、电磁波入射角度对电磁波入射等离子体中的吸收特性的影响规律。 研究结果表明:等离子体的电子密度,碰撞频率,和电磁波的入射角度对电磁波入射到等离子体中的吸收衰减都有较大的影响。借由此次的分析,可以进行深一步地讨论,以更加详细其吸收规律。6651
关键词 电磁波 等离子体 吸收特性 毕业设计说明书(论文)外文摘要
Title The absorption characteristic of electromagnetic waves by plasma slabs
Abstract
The absorption of electromagnetic waves by a plasma slab is studied in this
paper. Two main kinds of plasma slabs are discussed without taking the
effect of magnetic field into account, one is uniform and the other is
linear. Various factors are analyzed to obtain the influence of absorption
of electromagnetic waves by the two kinds of plasma slabs.
The expressions of the ratio of absorbed power and incident power are
calculated. Then we use Matlab software to make numerical simulation, by
which the influence of collision frequency, plasma’s distribution and
incidence angle are analyzed.
The study shows that plasma’s distribution, collision frequency and
incidence angle all have effect on the absorption characteristics of the
wave. A deeper discussion can be based on this paper to get the further
research.
Keywords electromagnetic wave; plasma slab; absorption characteristic.
目 次