Effects of anomalous high penetration rate of high-power KrF laser radiation throughout the solid matter and shock-induced graphite-diamond phase transformation

Vladimir D. Zvorykin; Valerii G. Bakaev; Vyacheslav Yu. Korol'; Ivan G. Lebo; Vladislav B. Rozanov; Gleb V. Sychugov

doi:10.1117/12.376967

1 February 2000 Effects of anomalous high penetration rate of high-power KrF laser radiation throughout the solid matter and shock-induced graphite-diamond phase transformation

Vladimir D. Zvorykin, Valerii G. Bakaev, Vyacheslav Yu. Korol', Ivan G. Lebo, Vladislav B. Rozanov, Gleb V. Sychugov

Author Affiliations +

Proceedings Volume 3885, High-Power Laser Ablation II; (2000) https://doi.org/10.1117/12.376967
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

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.

Citation Download Citation

Vladimir D. Zvorykin, Valerii G. Bakaev, Vyacheslav Yu. Korol', Ivan G. Lebo, Vladislav B. Rozanov, and Gleb V. Sychugov "Effects of anomalous high penetration rate of high-power KrF laser radiation throughout the solid matter and shock-induced graphite-diamond phase transformation", Proc. SPIE 3885, High-Power Laser Ablation II, (1 February 2000); https://doi.org/10.1117/12.376967

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