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Calculation of Free-Free OpacitiesFree-free absorption is an important contribution to the opacity for radiation transport through hot materials Temperatures can be as high as several keV, such that it becomes a computational challenge to solve the Schrodinger equation efficiently for rapidly oscillating continuum functions for high angular momenta. Several groups\footnots, including ours, have studied the phase amplitude solution (PAS) of the Schrodinger equation, in which one solves equations for the wave function amplitude and phase, which are: smooth functions of the electron energy. It is also important to have an accurate Schroudinger benchmark for the development of the PAS method. We present results for dipole matrix elements, Gaunt factors, and cross sections for the absorption of radiation at various energies for Cs XIX at temperature=100 eV and density=0.187 g/cc for our newly developed PAS and Schrodinger benchmark.
Document ID
20030052263
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Bhatia, A. K.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Maiden, D.
(Lawrence Livermore National Lab. Livermore, CA, United States)
Ritchie, A. B., Jr.
(Lawrence Livermore National Lab. Livermore, CA, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Optics
Meeting Information
Meeting: DAMOP 2003
Country: Unknown
Start Date: January 1, 2003
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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