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.
Highlights
Operation of the Inertial Fusion Energy (IFE) power plants and the experiments related to IFE can be accompanied by the formation of the high-velocity, high-density objects that can damage optical elements and/or other equipment unless some measures to prevent this are not taken [1,2,3,4,5]
We use the formulae from [6,7,8,9,10] to estimate the velocities of those shrapnel and to analyze possible damage of transparent optical elements of IFE power plants and experimental facilities by the so-called striking cores
The measured as well as calculated parameters of craters and shrapnel found in BK7 glass blastshield after the experiment conducted at Prague Asterix Laser System (PALS) in 2009 were presented
Summary
Operation of the Inertial Fusion Energy (IFE) power plants and the experiments related to IFE can be accompanied by the formation of the high-velocity, high-density objects that can damage optical elements and/or other equipment unless some measures to prevent this are not taken [1,2,3,4,5]. We provide data from analysis of craters and target fragments (shrapnel) found in the BK7 protecting glass shield after interaction of ∼ 600 J laser pulse with the target with a cavity. We use the formulae from [6,7,8,9,10] to estimate the velocities of those shrapnel and to analyze possible damage of transparent optical elements of IFE power plants and experimental facilities by the so-called striking cores
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