The features of craters formation on the target under the action of powerful laser pulse

The results of experimental and theoretical investigations of craters originating in solid targets of different materials when powerful Nd:glass laser pulse irradiates the surface at flux densities in the range of 10 super 10-10 super 14 W/cmu2 are presented. The experimentally observed dependencies...

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Bibliographic Details
Main Authors: Rupasov, A A, Bolkhovitinov, E A, Doskach, I.Ya, Erokhin, A A, Fedotov, S I, Feoktistov, L P, Gus'kov, S.Yu, Kruglov, B V, Osipov, M V, Puzirev, V N
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:The results of experimental and theoretical investigations of craters originating in solid targets of different materials when powerful Nd:glass laser pulse irradiates the surface at flux densities in the range of 10 super 10-10 super 14 W/cmu2 are presented. The experimentally observed dependencies of crater depth and ablated mass on laser pulse energy and target material properties are analysed employing the theory of shock wave initiation and propagation under the action of the plasma-producing laser beam. From the comparison of the theoretically deduced and experimentally observed dependencies, a simple formula is derived allowing to determine the pressures in the shock wave and in the plasma corona using the measurements for the crater depth and ablated mass.
ISSN:0094-243X