Study of the Ion Kinetic energy distribution in Aluminium using double-laser Pulse Plasma

Abstract

An experimental study was conducted to observe the effects of inter-pulse delay on the generation of ions emitted during double-pulse laser ablation of an Aluminium target. A specific values of inter pulse delay (550 ns, 570 ns, 600 ns, 650 ns, and 750 ns) were chosen from a delay generator using its second harmonic i.e., 532 nm to generate an AI plasma. The ion measurements are based on time of flight method, by using a time resolving plane ion detector, that was placed at a distance of 5 cm at the normal of the target's surface to measure the temporal variation of ions during the expansion of plasma in vacuum. The effect of inter-pulse delay on the average ion energy, total ion charge per pulse, kinetic energy distribution was investigated.