Electron acceleration by a radially polarized laser pulse in the presence of an intense pulsed magnetic field

An external pulsed magnetic field is applied to accelerate the electron by a radially polarized laser pulse in vacuum. The unique fields of radially polarized laser beams are utilized which leads to an improvement in trapping and acceleration of electrons so that an electron can be accelerated to a very high energy level. Moreover, a pulsed magnetic field is applied that further enhances the electron acceleration. The enhancement in electron energy is due to fact that the radial field vanishes on the axis and only the longitudinal field survives, which accelerates the electron axially. As time increases, the magnetic field plays a crucial role due to the resonance between the electrons and the electric field of the laser pulse at an optimum value. The combined role of radial polarization and a pulsed magnetic field can enhance the electron energy gain significantly.