双色线性激光场中电子与氦原子的散射研究

应用玻恩近似理论,在一种特殊的散射模式(双色线性激光场的极化方向在电子的入射方向和出射方向所确定的平面内,并且极化方向与电子的入射方向有ψ0=38°的夹角)下,利用静电屏蔽的Yukawa势,计算了双色线性激光场中氦原子被电子散射的微分散射截面。从计算结果中可以看出,光子能量、激光强度以及交换光子数的不同对微分散射截面的变化趋势都有较大影响。

Electron-he scattering in bichromatic laser field

The differential cross sections of e-helium are calculated by using the analytic screening electric Yukawa potential in the bichromatic laser field empolying the Born approximation in a special scattering geometry(the polarization direction of the bichromatic laser field is in the plane defined by the directions of incident and scattering of the electron,and the incident angle relative to the polarization direction is ψ0 = 38°).From these results,it can be found that the photon energy,laser intensity and different exchanges of photons have a significant effect on the change of the DCSs.