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膨胀石墨 3 mm波消光数值计算
引用本文:周明善*,徐铭.膨胀石墨 3 mm波消光数值计算[J].物理学报,2013,62(9):97201-097201.
作者姓名:周明善*  徐铭
作者单位:1. 云南国防工业职业技术学院化学工程学院, 昆明 650023; 2. 南京理工大学化工学院, 南京 210094
摘    要:为探讨膨胀石墨作为3 mm波干扰材料的消光、散射特性及其影响因素, 基于有限长度、有限电导率圆柱状导体的电磁散射, 利用矩量法建立了膨胀石墨的消光、散射、吸收及后向散射截面(雷达散射截面RCS)的计算式. 运用Mathematica编程计算并分析了膨胀石墨长度、半径、电导率、磁导率等因素与膨胀石墨消光、散射、吸收截面及RCS的关系. 结果表明: 当膨胀石墨的长度为1.5 mm、半径为0.05 mm时, 具有较好的消光、散射效果; 适当增大膨胀石墨的电导率、磁导率, 有利于提高其消光、散射能力. 本研究为探索增强膨胀石墨干扰3 mm波效果的技术途径提供了有价值的参考. 关键词: 膨胀石墨 石墨层间化合物 消光截面 矩量法

关 键 词:膨胀石墨  石墨层间化合物  消光截面  矩量法
收稿时间:2012-10-24

Numerical calculation of 3 mm wave extinction for expanded graphite
Zhou Ming-Shan,Xu Ming.Numerical calculation of 3 mm wave extinction for expanded graphite[J].Acta Physica Sinica,2013,62(9):97201-097201.
Authors:Zhou Ming-Shan  Xu Ming
Abstract:In order to explore the extinction and scattering characteristics of expanded graphite, which is a kind of 3 millimeter wave interference materials, the formula of extinction, scattering, absorption and backscattering cross sections (radar cross. section, RCS) are established based on the electromagnetic scattering theory of cylindrical conductor of finite length and finite conductivity by the method of moment. The extinction and scattering characteristics are calculated, and the influening factors of the characteristics including length, radius, conductivity and magnetic permeability of the expanded graphite are analyzed using Mathematica program. Results show that the expanded graphite has excellent extinction and scattering properties when its length and radius are 1.5 mm and 0.5 mm, respectively, and the properties can be improved when the conductivity and magnetic permeability of the expanded graphite are increased properly. This research provides a valuable insight into the improvement of interference performance of expanded graphite in 3 millimeter wave.
Keywords: expanded graphite graphite intercalation compound extinction cross-section method of moment
Keywords:expanded graphite  graphite intercalation compound  extinction cross-section  method of moment
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