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18 February 2013 Opacity of germanium and silicon in ICF plasmas
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Because germanium and silicon may be used as dopants in the ablator of ignition target, the knowledge of their opacities is crucial. We have calculated the opacity by using two approaches. The first one utilizes a detailed line calculation in which the atomic database is provided by the MCDF code. A lineshape code was then adapted to the calculation of opacity profiles. Because the calculation time is prohibitive when the number of lines is huge, a second approach, combining detailed line calculations and statistical calculations is used. This approach necessitates much smaller calculation than the first one and is then well suited for extensive calculations. The monochromatic opacity and the Rosseland and Planck mean opacities are calculated for various relevant densities and temperatures.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
D. Benredjem, G. Mondet, A. Calisti, F. Gilleron, and J.-C. Pain "Opacity of germanium and silicon in ICF plasmas", Proc. SPIE 8602, High Power Lasers for Fusion Research II, 860205 (18 February 2013);


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