Effect of laser intensity and initial electron energy on electron radiation

To investigate the effects of laser intensity and electron initial energy on the motion and radiation properties of high-energy electrons, a model of high-energy electrons interacting with laser pulses was established on the basic equations of electromagnetism. Numerical simulation programs written in MATLAB can help to obtain visualization data of electron trajectories and electromagnetic radiation. The results show that the peak amplitude of the electron impact oscillation increases as the laser intensity increases and show a linear increasing trend; the peak amplitude of the electron oscillation decreases as the initial energy of the electrons increases, and the decrease tends to slow down. When the initial energy of the electron is larger, the polar angle in the direction of maximum radiation is 180°, and the incident laser intensity has very little impact on the change of the radiation angle. Observing the radiation peak, the radiation peak is positively correlated with the incident laser intensity and the initial energy of electrons. The electron energy or laser intensity increasing, and the spectral energy distribution expanding from low to high frequencies. The results provide a theoretical basis for further in-depth study of the effects of laser intensity and electron initial energy on the motion and radiation properties of high-energy electrons.