【摘要】 在单粒子模型基础上用一种简便的能量模型计算了变参数Wiggler自由电子激光器的增益。结果表明,周期磁场振幅沿z方向增加,或空间周期长度沿z变化都可以提高增益。但前者比后者的效果更明显。更多还原

【Abstract】 Using a new energy model, the gain equaitons of exponential gradient amplitude and variable period Wiggler free electron lasers are obtained on the basis of single particle model. The results show that FEL gain will increase when amplitude and period of the mag’netic field increase along the z direction.更多还原