Laser-Plasma Electron Acceleration with Initial Plasma Profile

Abstract

An accelerated electron beam could be generated during the ultra short-high intensity laser pulse propagation in a plasma. It could be obtained by wake field acceleration, which highly depends on the plasma profile that may affect the electron energy spectrum. In this study, we use the Maxwell and hydrodynamic equations to obtain the electron density distribution and magnetic and electric field profiles in the plasma. According to our numerical calculations, the electrical field could be highly increased by fitting an initial plasma density profile. These considerations lead to the designing of a gas jet nozzle which could be useful for laser-plasma interaction experimental research. We have calculated the electric and magnetic field amplitudes in the laser propagation direction for various intensities and wavelengths. Our results show considerable field boosting when the laser wavelength or the laser intensity are increased.