有限磁场作用下等离子体填充螺旋线慢波结构的色散分析  

Dispersion Analysis of Helical Slow Wave Structure Filled with Finite Magnetized Plasma

作　　者：谢鸿全[1] 游佳[1] 

机构地区：[1]西南科技大学信息工程学院,四川绵阳621010

出　　处：《四川师范大学学报（自然科学版）》2011年第1期86-90,共5页Journal of Sichuan Normal University（Natural Science）

基　　金：国家自然科学基金(10347009);四川省教育厅重点基金(09ZA128)资助项目

摘　　要：将等离子体填充的螺旋线慢波结构置于一纵向有限磁场中,考虑到磁化等离子体和介质的作用,该系统沿径向分为两个区域.采用螺旋导电面模型,利用已导出的慢波结构色散方程,数值计算了在不同的等离子体密度和磁场强度条件下,螺旋线慢波结构的色散特性,并对数值计算的结果进行了详细的分析.A helical slow wave structure filled with plasma is located in a finite longitudinal magnetic field.Taking the effect of the magnetized plasma and the dielectric into account,the system is radially separated into two regions.By means of conducting plane model and Maxwell equation,the distribution of the electromagnetic field is established.Using the boundary conditions of each region,the dispersion relation of the slow wave structure is derived.The dispersion characteristics are analyzed by numerical computation in the cases of various densities of plasma and different strengths of the electromagnetic field.Some useful results are obtained on the basis of the discussion.

关 键 词：有限磁场 等离子体 混合模式 

分 类 号：TN28[电子电信—物理电子学]