Abstract
Experimental, theoretical, and numerical results of investigations of the iodine laser interaction with single and double targets (consisting of an Al foil placed in front a massive Al slab and separated by a certain gap) were employed. Experiments were performed with the use of the first harmonic of laser radiation with parameters as follows: laser energy in the range of 100 ÷ 400 J, pulse duration of 0.4 ns and focal spot diameter of 250 μm. Velocities of accelerated foils and electron density distributions of plasma streams were determined by means of 3-frame interferometry. Shapes and volumes of craters were obtained employing crater replica technology and microscopy measurement. To interpret the experimental results the theoretical model of plasma ablation and shock wave formation as well as the two-dimensional Lagrangian hydrodynamics code were used.
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