Generation of Low-Frequency Radiation Under the Laser Pulse Effect on a Plasma in a Magnetic Field

Abstract

We reveal the possibility of a low-frequency radiation generation at a normal incidence of the laser pulse on a dense plasma in a constant magnetic field. The generation occurs due to the motion of electrons under the magnetic field effect and a ponderomotive force slowly varying with time localized in the skin layer where the laser radiation penetrates. The characteristic radiation frequencies are determined by the inverse duration of the laser pulse. We find the field strength of the radiation generated and its dependences on the Larmor frequency of electrons and the plasma and laser pulse parameters.