Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Angular momentum of radiation from a charge drifting along a cylindrical channel in a magnetic field
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms ( IF 1.3 ) Pub Date : 2020-12-29 , DOI: 10.1016/j.nimb.2020.12.019
Vladimir Epp , Ulyana Guselnikova , Julia Janz

The angular momentum of radiation related to the passage of relativistic particles in a cylindrical channel is studied theoretically. To enhance the angular momentum of radiation, it is proposed to place the channel in a strong magnetic field parallel to the channel axis. The trajectories of the particles in the channel, the conditions for trapping particles in the channeling mode are investigated and equations for calculating the orbital angular momentum of radiation are obtained. It is shown that the angular momentum of radiation of a uniform beam of particles in the channel is not equal to zero only if the particles enter the channel at an angle greater than the critical angle. A significant difference between vortex radiation from a bunch of cylindrical channels (for example bunch of carbon nanotubes) from laser or undulator radiation is that the radiation beam of the latter has only one vortex axis. While the radiation from the beam of cylindrical channels has one vortex axis per each channel. Dependence of the angular momentum of radiation on the value of magnetic field and on the incident angle is studied.



中文翻译:

来自电荷的辐射角动量在磁场中沿着圆柱通道漂移

理论上研究了与相对论粒子通过圆柱通道有关的辐射角动量。为了增强辐射的角动量,建议将通道放置在平行于通道轴的强磁场中。研究了通道中粒子的运动轨迹,在通道模式中俘获粒子的条件,并获得了计算辐射轨道角动量的方程。结果表明,仅当颗粒以大于临界角的角度进入通道时,通道中的均匀颗粒束的辐射角动量才不等于零。来自一束圆柱形通道(例如一束碳纳米管)的来自激光或波状辐射的涡旋辐射之间的显着区别是后者的辐射束只有一个涡旋轴。圆柱通道束的辐射每个通道都有一个涡轴。研究了辐射角动量对磁场值和入射角的依赖性。

更新日期:2020-12-29
down
wechat
bug