Spectral emissivities and opacities of plasma at laser interaction with targets of various chemical composition

Evgeny M. Ivanov; Vladislav B. Rozanov; Galina A. Vergunova

doi:10.1117/12.535944

12 December 2003 Spectral emissivities and opacities of plasma at laser interaction with targets of various chemical composition

Evgeny M. Ivanov, Vladislav B. Rozanov, Galina A. Vergunova

Author Affiliations +

Proceedings Volume 5228, ECLIM 2002: 27th European Conference on Laser Interaction with Matter; (2003) https://doi.org/10.1117/12.535944
Event: ECLIM 2002: 27th European conference on Laser Interaction with Matter, 2002, Moscow, Russian Federation

Abstract

In the present work a theoretical model of plasma absorption and emission is developed and applied to explanation of some experimentally observed spectra from laser-produced plasmas under conditions being of interest for the ICF as well. The targets for ICF contain the layers of various materials: Be, Al, Cu, SiO₂, agar (C₁₂H₁₈O₉)_n, and others. Of interest is the code, calculating the optical characteristics of plasma of a complicated chemical composition in a broad range of plasma conditions (density and temperature). This spectroscopic modeling has been performed by a collisional-radiative model DESNA for non-LTE mixtures involving detailed structure of excited levels of all charge states from a neutral atom to a fully ionized ion. In the paper we present some new results of theoretical investigation of x-ray emission in the conditions close to real experiments on interaction of short and powerful laser pulses with targets. The simulation and available experimental results are in good enough agreement for various target materials (C, Al, Cu).

Citation Download Citation

Evgeny M. Ivanov, Vladislav B. Rozanov, and Galina A. Vergunova "Spectral emissivities and opacities of plasma at laser interaction with targets of various chemical composition", Proc. SPIE 5228, ECLIM 2002: 27th European Conference on Laser Interaction with Matter, (12 December 2003); https://doi.org/10.1117/12.535944

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