Generation of electromagnetic impulse from laser irradiating targets and its propagation in the laser facility

Abstract

Laser interaction with targets in fusion can produce significant electromagnetic radiations, which are strongly dependent on the incident laser parameter and target configuration. The electromagnetic pulses generated at a high-power laser facility are recorded and analyzed in terms of propagation in cables and plasma. The attenuation occurs to the radiations in different media and the waveform shows a single peak for the signal close to the laser chamber center, but overlap peaks are observed for the signals measured far away from the center. The distance between peaks is thus analyzed to predict the electromagnetic features and plasma density.