Electron acceleration by a linearly polarized laser pulse in the presence of a pulsed intense axial magnetic field in vacuum

摘要

Acceleration of electrons by a short intense linearly polarized laser pulse in the presence of a pulsed intense axial magnetic field has been studied. The electrons are injected in the direction of laser propagation. Resonance occurs between the electrons and the electric field of the laser pulse for an optimum value of the magnetic field, and the electrons are accelerated to high energy. The value of the optimum magnetic field decreases with initial electron energy. Most of the energy gain is in the longitudinal direction. The acceleration gradient increases with laser intensity. (c) 2006 Optical Society of America.