Results 301 to 308 of about 34,820 (308)

The radiative opacity at the Sun centre—a code comparison study

Journal of Quantitative Spectroscopy and Radiative Transfer, 2001
Abstract The results of a recent code comparison study are presented. In the study different codes were used to calculate the opacity of a plasma mixture whose composition, temperature and density were close to those believed to occur at the Sun's centre.
S. J. Rose, S. J. Rose
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The Atmospheres of AGB Stars: Opacities, Radiative Transfer and Models

EAS Publications Series, 2008
We discuss models of AGB star atmospheres. Special emphasis is put on the question of opacities, treatment of radiative transfer and simulation of interferometric results.
B. Aringer, Susanne Höfner, Walter Nowotny   +2 more
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Radiative opacity of high-temperature and high-density gold

Physical Review A, 1979
The authors calculate the radiative opacity of gold under conditions representing particle-beam--pellet fusion targets: solid density and a temperature of 750 eV. It is shown that under these conditions the absorption lines form broad bands due to the combined effects of linewidth, electrostatic splitting, and the existence of a distribution of ...
Z. Zinamon, E. Nardi
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Calculations of the radiative opacity of laser-produced plasmas

Journal of Physics B: Atomic, Molecular and Optical Physics, 1992
The author presents a model for the calculation of the radiative opacity of high-power laser-produced plasmas in local thermodynamic equilibrium (LTE). The model uses detailed configuration accounting in an open shell for both the line and photoelectric absorption.
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Some estimates of the radiative Rosseland mean opacity

Journal of Quantitative Spectroscopy and Radiative Transfer, 1967
Abstract The effect of atomic number Z on the Rosseland mean opacity is presented in graphic form for a large range of temperatures and densities. This permits a rapid determination of the dominant process and, in many cases, greatly simplifies the calculation of a good approximation of the Rosseland mean opacity.
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On the definition and use of grey opacities in radiative transfer problems

Transport Theory and Statistical Physics, 1971
Abstract The general problem of reducing a frequency-dependent radiative transfer problem to an equivalent grey problem is discussed. In particular, we construct, from the integral transport equation, an asymptotic solution to be used in forming grey opacities.
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Averaging opacities for radiative transfer problems

Journal of Quantitative Spectroscopy and Radiative Transfer, 2000
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THE RADIATIVE AND CONDUCTIVE OPACITIES UNDER WHITE DWARF CONDITIONS

Annals of the New York Academy of Sciences, 1941
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