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Proceedings Paper

Effects of anomalous high penetration rate of high-power KrF laser radiation throughout the solid matter and shock-induced graphite-diamond phase transformation
Author(s): Vladimir D. Zvorykin; Valerii G. Bakaev; Vyacheslav Yu. Korol'; Ivan G. Lebo; Vladislav B. Rozanov; Gleb V. Sychugov
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Paper Abstract

This paper describes a performance of 100 J-class KrF laser system `GARPUN' intended for target irradiation experiments by 100 ns pulses. A controllable space-time distribution in a focal spot reaching 5*1012 W/cm2 produced megabar ablation pressure, which irradiated conical shock wave in solids. It propagated in a quasi-steady manner together with an ablation front that resulted in anomalous high penetration rate of laser radiation throughout the matter. Long-time sample loading together with strong tangential shear flow of compressed layers produced favorable conditions for pressure-induced transformation of the pyrolytic graphite into a diamond-like phase by martensitic mechanism.

Paper Details

Date Published: 1 February 2000
PDF: 11 pages
Proc. SPIE 3885, High-Power Laser Ablation II, (1 February 2000); doi: 10.1117/12.376967
Show Author Affiliations
Vladimir D. Zvorykin, P.N. Lebedev Physical Institute (Russia)
Valerii G. Bakaev, P.N. Lebedev Physical Institute (Russia)
Vyacheslav Yu. Korol', P.N. Lebedev Physical Institute (Russia)
Ivan G. Lebo, P.N. Lebedev Physical Institute (Russia)
Vladislav B. Rozanov, P.N. Lebedev Physical Institute (Russia)
Gleb V. Sychugov, P.N. Lebedev Physical Institute (Russia)

Published in SPIE Proceedings Vol. 3885:
High-Power Laser Ablation II
Claude R. Phipps; Masayuki Niino, Editor(s)

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