自由电子激光的能量转换

ENERGY CONVERSION OF FREE ELECTRON LASER

根据Ｗｅｉｚｓａｃｋｅｒ－Ｗｉｌｌｉａｍｓ近似，把自由电子激光模拟成相对论性电子与赝光子的碰撞，而光子被散射．按照这个物理模型，研究了电子与光子的能量交换，得到了散射光子能量与碰撞前光子能量之间的关系：散射光子能量的放大是以电子消耗能量为代价的分析。计算了能量交换的规模，并得出自由电子激光中能量转换效率最大为５０％

According to the Weizsacker-Williams approximation, FEL Is simulated by collision between the relativistic electron and the pseudophoton, and the photon is scattered by the electron. According to this physical model, we studied the energy conversion between the electron and the photon, and obtained the relation between the energy of scattered photon andthe energy of photon before collision Increase of the energy of the scatteredphoton is at the price of the energy that the electron consumes. We calculated the scale of theenergy conversion. In FEL, the maximum energy conversion efficiency is 50 %.