斜入射电磁波在非均匀碰撞等离子体中的折射和反射特性

核聚变与等离子体物理 ›› 2012, Vol. 32 ›› Issue (1): 32-37.

斜入射电磁波在非均匀碰撞等离子体中的折射和反射特性

袁忠才，时家明，许波

(脉冲功率激光技术国家重点实验室，安徽省红外与低温等离子体重点实验室，合肥电子工程学院，合肥 230037)

收稿日期:2011-06-21 修回日期:2011-10-28 出版日期:2012-03-15 发布日期:2012-03-14
作者简介:袁忠才(1977-)，男，四川西充人，讲师，博士，主要研究方向等离子体物理学。
基金资助:
新世纪优秀人才支持计划(NCET)和安徽省红外与低温等离子体重点实验室基金资助课题(2010A001005D)

Refraction and reflection of obliquely incident electromagnetic wave by inhomogeneous collisional plasmas

YUAN Zhong-cai, SHI Jia-ming, XU Bo

(State Key Laboratory of Pulse Power Laser Technology, Key Lab of Infrared and Low Temperature Plasma of Anhui Province, Hefei Electronic Engineering Institute, Hefei 230037)

Received:2011-06-21 Revised:2011-10-28 Online:2012-03-15 Published:2012-03-14

摘要/Abstract

摘要：

提出碰撞吸收型等离子体的等效折射指数，重新计算了折射角，并与利用常规方法得到的折射角进行了比较。分析了等离子体密度和碰撞频率对折射角的影响。考察了斜入射电磁波在吸收型等离子体中的折射特性，并以一维非均匀碰撞吸收型等离子体为例，对斜入射电磁波的反射特性进行了考察。结果表明，等效折射指数的概念涵盖了入射角度的影响，在考察斜入射时更准确、便捷。

关键词: 反射, 斜入射, 等效介电常数, 等离子体

Abstract:

The effective refractive indices of collisional plasma are proposed, which are adopted to calculate the refractive angles. The angles are compared with those using traditional Snell’s theory and plasma complex refractive indexes. The dependences of discrepancies on plasma electron density and collision frequency are analyzed. The refraction and transporting properties of obliquely incident wave in inhomogeneous collisional plasmas are investigated. As an example, the reflection coefficients of obliquely incident wave by an inhomogeneous plasma slab are calculated and discussed. The results show that the influence of the incident angle is considered in the effective refractive indices of collisional plasma which are suitable to investigate the refraction and reflection of obliquely incident electromagnetic wave by inhomogeneous collisional plasmas.

Key words: Electromagnetic refraction, Obliquely incident wave, Effective refractive index, Plasma

中图分类号:

O539

袁忠才，时家明，许波. 斜入射电磁波在非均匀碰撞等离子体中的折射和反射特性[J]. 核聚变与等离子体物理, 2012, 32(1): 32-37.

YUAN Zhong-cai, SHI Jia-ming, XU Bo. Refraction and reflection of obliquely incident electromagnetic wave by inhomogeneous collisional plasmas[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2012, 32(1): 32-37.

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