填充介质波导中沿螺旋轨迹运动电荷的电磁场和辐射
Electromagnetic field and radiation for a charge moving along a helical trajectory inside a waveguide with dielectric filling
摘要：
研究了均匀介质填充导电壁的圆波导中点电荷沿螺旋轨迹运动时产生的电磁场。对辐射场进行了分解，导出了TE波和TM波的辐射强度计算公式。结果表明，辐射量子的主要部分是以TE波的形式发射的。考虑了各种极限情况。数值计算的结果表明，波导的插入提供了一个额外的机制，通过选择波导和填充介质的参数调谐的发射辐射的特性。
英文摘要：
We investigate the electromagnetic field generated by a point charge moving along a helical trajectory inside a circular waveguide with conducting walls filled by homogeneous dielectric. The parts corresponding to the radiation field are separated and the formulae for the radiation intensity are derived for both TE and TM waves. It is shown that the main part of the radiated quanta is emitted in the form of the TE waves. Various limiting cases are considered. The results of the numerical calculations show that the insertion of the waveguide provides an additional mechanism for tuning the characteristics of the emitted radiation by choosing the parameters of the waveguide and filling medium.
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