Laser Acceleration of Electrons in Magnetized Collisionless Plasma

A computational investigation was carried out in the field of laser-plasma interaction to studythe acceleration of electrons with non - relativistic velocities in magnetized collisionless plasma.The interaction of a Nd: Yag laser pulse of 25 fs duration and a 5x10^15 W/cm2 intensity with aplasma was studied at a plasma electron density ne=1x10^18 cm-3 in the presence of an externalmagnetic field for the three values of the field strength B=60 MG, 70 MG and 80 MG. It was foundthat the electron acquires a maximum energy of ~ 19 keV during the interaction when an externalmagnetic field of strength B= 80 MG is applied. The maximum energy of the electron during theinteraction reaches ~ 1 keV in the absence of an external magnetic field for the same plasmaelectron density and laser pulse, after the interaction the maximum energy of the electron reached ~15 eV. However, the maximum energy of the electron after the interaction reaches ~ 3 keV when anexternal magnetic field strength of B= 70 MG is applied. This is due to a sustainable generated laserwakefield of ~ 2x10^9 V/cm. Thus, it is concluded that an applied external magnetic field assists theacceleration of the electron and can subsidize for a high laser beam intensity.