Analysis of damaging effects of laser-plasma accelerated shrapnels on protecting glass shield

Abstract

Abstract. Analysis of the damage caused by laser plasma accelerated fragments of metal target was performed. Measured as well as calculated parameters of craters and shrapnel found in BK7 glass blastshield are presented. Method applied for the measurement of parameters of craters is described. Potential damage of optical elements by the so-called striking cores (high-velocity stable objects arising due to collapse of cones or some other target parts toward their axes) that can be generated in IFE related experiments is evaluated.

Separation and Analysis of Connected, Micrometer-Sized, High-Frequency Damage on Glass Plates due to Laser-Accelerated Material Fragments in Vacuum

“…This enabled them to estimate the volume of material removed from a glass plate. For impacts with a diameter of (1.0-2.0) mm, the volume was (0.14-0.48) mm 3 and for larger diameters between (2.75-8.4) mm, the volume was (0.45-37.4) mm 3 [13]. Furthermore, correlations could be found between the impact diameter, the impact depth, the shrapnel diameter, and its material density.…”

“…Furthermore, correlations could be found between the impact diameter, the impact depth, the shrapnel diameter, and its material density. These correlations enabled them to estimate the shrapnel velocity, which resulted in (288-534) m/s for the small impact diameters [13]. In addition to the previous experimental results, Aubert et al [14] provided a contribution to the topic of impact simulations in 2019.…”

“…In 2013, Martinkova et al [13] extended the previous two-dimensional results with the volume of individual impacts. Plasticine was used to create impressions of the impacts of the damaged surfaces.…”