The electron-photonscattering rate is lower several orders than the electron-optical-phonon scattering rates.
电子—光子作用下的散射速率要比电子—声子作用下的散射速率低几个数量级；
2
By Compton scattering of virtual photon with relativistic electron, the virtual photon can be transformed into real photon to radiate out.
当虚光子与作沟道运动的电子发生康普顿散射时，虚光子就会转化为实光子辐射出去。
3
Considering recoil of electron, a new theory to explain axial channelling radiation is presented based on Compton scattering of virtual photon with relativistic electron.