论文标题
在波导中反转的Cherenkov转变辐射部分填充了各向异性分散介质
Reversed Cherenkov-transition radiation in a waveguide partly filled with an anisotropic dispersive medium
论文作者
论文摘要
我们分析了在圆形金属波导中均匀移动的束电磁场，并在真空面积和充满各向异性分散型非磁性介质的区域之间越过边界。该培养基的特征是对角线介电介电常数张量，其成分具有血浆类型的频率分散体。使用复杂变量函数理论的方法对波导模式组件进行研究。结果表明，根据介质的参数，在波导的填充区域中产生的Cherenkov辐射（CR）可以与束运动相关的方向相反。 CR可以渗透到波导的真空区域，也就是说，可以生成密集的反向Cherenkov-Transition辐射（RCTR）。描述了这种辐射的主要特性，在各向同性左手培养基的情况下，RCTR与RCTR的基本差异。
We analyze the electromagnetic field of a bunch that moves uniformly in a circular metal waveguide and crosses a boundary between a vacuum area and an area filled with an anisotropic dispersive nonmagnetic medium. The medium is characterized by the diagonal dielectric permittivity tensor with components possessing frequency dispersion of plasma types. The investigation of the waveguide mode components is performed with the methods of the complex variable function theory. It is shown that in compliance with the parameters of the medium, Cherenkov radiation (CR) generated in the filled area of the waveguide can have reversed direction in relation to the bunch motion. CR can penetrate into the vacuum area of the waveguide, that is, the intensive reversed Cherenkov-transition radiation (RCTR) can be generated. The main properties of this radiation are described, and essential differences from the RCTR in the case of isotropic left-handed medium are revealed.
