离子通道自由电子激光器中平衡态电子的科尔莫哥洛夫熵

摘要

Motion stability of the relativistic electron is studied in an ion-channel free-electron laser based on the Raman free-elec-tron laser.Kolmogonov entropy of electron motion is analyzed .By making use of the reported MIT experiment data , the influences of the ion-density, adiabatic magnetic field and self-field on the electron motion and motion stability are investigated .It is shown that the adiabatic magnetic field has an obvious influence on the electron motion .However, it influences hardly the stability of electron motion . The ion-density and the self-field have an essential influence on the stability .%　　基于拉曼型自由电子激光器，研究了离子通道自由电子激光器中相对论电子运动的稳定性，分析了电子运动的科尔莫哥洛夫熵，以MIT实验数据为例，分别研究了离子密度、绝热压缩场、自身场对电子的运动和电子运动的稳定性的影响。结果表明：绝热压缩场对电子运动有较大影响，但几乎不会影响电子运动的稳定性；离子密度、自身场对电子运动的稳定性有实质性影响。