Diagnostics of Fast Processes in Laser Plasmas after the Irradiation of Low-Density Media in the Mishen Facility.

Autor: Bugrov, A. É., Burdonski&icaron;, I. N., Gavrilov, V. V., A. Yu. Gol'tsov, V. V., Dedova, O. L., Zhuzhukalo, E. V., Koval'ski&icaron;, N. G., Kondrashov, V. N., Pergament, M. I., Petryakov, V. M., Fasakhov, I. K., Yankovsi&icaron;, G. M.
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Zdroj: Plasma Physics Reports; Feb2004, Vol. 30 Issue 2, p143-148, 6p
Abstrakt: New experimental data on the laser irradiation of low-density porous materials in the Mishen facility are presented and discussed. A wide set of optical and X-ray diagnostics was used to analyze the physical processes in porous media with different microstructures and specific densities of 1–30mg/cm[sup 3] exposed to laser pulses with λ = 1.054μm,τ = 3 ns, and I = 10[sup 13]–10[sup 14]W/cm[sup 2]. The features of laser absorption and scattering and the processes of energy transfer in porous media were investigated for different average densities, thicknesses, and microstructures of the targets and different incidence angles of the laser beam. It was found that the material microstructure (chaotic or quasi-ordered) significantly affected the formation and dynamics of a plasma produced inside the irradiated samples that model the components of the advanced targets used in inertial confinement fusion research. © 2004 MAIK “Nauka / Interperiodica”. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index