摘要
在386微机上建立了长脉冲单模的三维放大器数值模拟程序3DFEL,每个单程只需20分钟。模拟计算得出:(1)发射度对输出功率的影响几乎是指数式的。(2)电子相空间形状(相同发射度)对输出功率的重大影响主要表现为两方面:(a)不同相空间形状,等效能散度是不同的,(b)电子束包络和光场包络匹配关系。(3)非理想入射(偏入射和斜入射)超出一定范围之后将引起输出功率的指数下降。
A code of 3D-FEL amplifier with single mode was established on a 386-microcomputer which only takes 20minutes for single pass. Using this code, we found : 1 .emittance causes exponential changes of output power, 2.the geometry of electron phase space has important influence on output power in two aspects which leads to (a) different equivalent .energy spread and (b) different match condition between electron beam and optical beam , and 3.nonideal incidence of e-beam beyond some region causes the exponential reduction of output power.
出处
《强激光与粒子束》
EI
CAS
CSCD
1993年第2期203-216,共14页
High Power Laser and Particle Beams
关键词
自由电子激光
电子束
相空间
三维
3D-FEL, equivalent energy spread, envelope-matching, nonideal incidence.
