有限磁场作用下等离子体圆柱波导中的线性理论  

Linear theory of plasma cylindrical waveguide in a finite magnetic field

作　　者：李伟[1] 魏彦玉[1] 刘盛纲[1] 

机构地区：[1]电子科技大学高能电子学研究所,四川成都610054

出　　处：《强激光与粒子束》2001年第5期641-645,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金资助课题 (69493 5 0 0 )

摘　　要：考虑了有限磁场的作用 ,利用“匹配场法”推导出填充环形等离子体时圆柱波导的色散方程 ,并较详细地讨论了等离子体的厚度、密度 ,以及所加磁场强度对色散特性的影响。尤其讨论了等离子体厚度对增长率的影响并得出The dispersion equation on a cylindrical waveguide having an annular plasma sheet is derived under the condition of limited magnetic field. The influence of different plasma density, thickness, and field intensity on the plasma frequency, especially the plasma thickness on depressive characteristics and interaction growth rate are discussed, and the conclusion is obtained that there is a perfect thickness to get the biggest interaction rate.

关 键 词：环形等离子体 色散方程 有限磁场 波增长率 匹配场法 圆柱波导 厚度 

分 类 号：TN136[电子电信—物理电子学] O539[理学—等离子体物理]