NON-LTE RADIATION TRANSPORT IN MODERATE-DENSITY PLASMAS

被引:10
作者
MACFARLANE, JJ
WANG, P
MOSES, GA
机构
[1] Fusion Technology Institute, Johnson Drive, University of Wisconsin
基金
美国国家科学基金会;
关键词
D O I
10.1017/S0263034600009125
中图分类号
O59 [应用物理学];
学科分类号
摘要
We present results from non-LTE line radiation transport calculations for high-temperature, optically thick plasmas with densities approximately 10(16) - 10(20) ions/cm3. The calculations are based on an escape probability radiative transport model in which the atomic rate equations are solved self-consisting with the radiation field. Steady-state ionization and excitation populations are determined by detailed balancing of atomic processes, with photoexcitation effects included. Atomic data are computed using a combinated of Hartree-Fock, semiclassical impact-parameter, and distorted-wave calculations. Our results indicate that the reabsorption of line radiation significantly alters the level populations and reduces the radiation flux from several types of fusion-related plasmas. We also compare our results with those obtained from multigroup radiation diffusion calculations, and discuss the ramifications of our results for ICF target chamber plasmas.
引用
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页码:729 / 740
页数:12
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