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Proceedings Paper

Opacity of germanium and silicon in ICF plasmas
Author(s): D. Benredjem; G. Mondet; A. Calisti; F. Gilleron; J.-C. Pain
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Paper Abstract

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.

Paper Details

Date Published: 18 February 2013
PDF: 8 pages
Proc. SPIE 8602, High Power Lasers for Fusion Research II, 860205 (18 February 2013); doi: 10.1117/12.2008508
Show Author Affiliations
D. Benredjem, Lab. Aimé Cotton, CNRS, Univ. Paris-Sud 11 (France)
G. Mondet, Lab. Aimé Cotton, CNRS, Univ. Paris-Sud 11 (France)
A. Calisti, PIIM, CNRS, Aix-Marseille Univ. (France)
F. Gilleron, CEA, DAM, DIF (France)
J.-C. Pain, CEA, DAM, DIF (France)


Published in SPIE Proceedings Vol. 8602:
High Power Lasers for Fusion Research II
Abdul A. S. Awwal, Editor(s)

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