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Application of Laser Simulation Method for the Analysis of Crater Formation Experiment on PALS Laser |
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| Authors: | S Borodziuk A Kasperczuk T Pisarczyk K Rohlena J Ullschmied M Kalal J Limpouch P Pisarczyk |
| Institution: | (1) Institute of Plasma Physics and Laser Microfusion, 23 Hery St., 00-908 Warsaw 49, Poland;(2) Acad. Sci. CR, Joint Research Laboratory PALS of the Institute of Physics and Institute of Plasma Physics, Za Slovankou 3, 182 21 Praha 8, Czech Republic;(3) Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Brehova 7, 115 19 Praha 1, Czech Republic;(4) Institute of Computer Science, Warsaw University of Technology, 15/19 Nowowiejska St, 00-665 Warsaw, Poland |
| Abstract: | The crater formation process is studied in the  laser - Al solid target interactions on the PALS iodine laser facility. A great variety of laser beam parameters are used to irradiate massive aluminium targets. Large laser energies available (up to 600 J) open a possibility to investigate the process of crater formation for physical conditions different from the earlier studies for the lower laser energies. Comparison with the earlier results is presented.A simple theory, LSM (laser simulation method), has been applied for the analysis of the experimental results. This model leads to a universal relation (scaling law) for the crater relative volume. Our work extends the study of crater formation to the virtual macroparticle velocities exceeding 100 km/s. The scaling law is derived here for this previously unexplored region. An alternative method of studying crater formation is also proposed. |
| Keywords: | laser-target interaction high-velocity impact crater formation interferometric plasma diagnostics |
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