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Analytical opacity formulas for ICF elements

Published online by Cambridge University Press:  01 October 1999

E. MÍNGUEZ ,
R. MUÑOZ ,
R. RUIZ  and
R. YAGÜE
E. MÍNGUEZ
Affiliation:
Institute of Nuclear Fusion, E.T.S.I. Industriales, José Gutiérrez Abascal, 2, 28006 Madrid, Spain
R. MUÑOZ
Affiliation:
Institute of Nuclear Fusion, E.T.S.I. Industriales, José Gutiérrez Abascal, 2, 28006 Madrid, Spain
R. RUIZ
Affiliation:
Institute of Nuclear Fusion, E.T.S.I. Industriales, José Gutiérrez Abascal, 2, 28006 Madrid, Spain
R. YAGÜE
Affiliation:
Institute of Nuclear Fusion, E.T.S.I. Industriales, José Gutiérrez Abascal, 2, 28006 Madrid, Spain
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Abstract

Opacity calculations for targets used in inertial confinement fusion (ICF) needs sophisticated atomic physics models, assuming a large number of configurations and transitions to simulate the plasma. Depending on the degree of accuracy for calculations of targets for ICF, some hydrodynamic-radiation codes use multifrequency opacities or well mean opacities.

In this work, using a sophisticated atomic physics code for LTE opacity calculations, that provides well multifrequency opacities or mean opacities, useful analytical opacity formulas for several single elements used in ICF have been generated, giving both Rosseland and Planck mean opacities as a function of the plasma parameters.

Type
Research Article
Information
Laser and Particle Beams , Volume 17 , Issue 4 , October 1999 , pp. 799 - 806
Copyright
1999 Cambridge University Press

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