Smooth transition from spectral lines to a continuum in dense hydrogen plasma

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• 作者：L. G. D'yachkov
• 刊名：High Temperature
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：54
• 期：1
• 页码：5-10
• 全文大小：333 KB
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• 作者单位：L. G. D’yachkov (1)
  
  1. Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, 125412, Russia
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Atoms and Molecules in Strong Fields and Plasma Physics
  Materials Science
  Mechanics, Fluids and Thermodynamics
  Physical Chemistry
  Industrial Chemistry and Chemical Engineering
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3156

文摘

The problem of describing the transition region between a line and continuous spectra of emission in hydrogen or a hydrogen-like plasma is considered, which is most interesting for the case of a dense plasma when the transition region becomes sufficiently wide. The spectral lines and the continuum are typically calculated in different approximations; therefore, the problem of their coordination and matching arises. At present, the method of effective populations is the standard approach. In this work, another approach is used that excludes the problem of joining of the discrete and continuous spectra, since the calculations of both of them are performed within a single approximation. Their comparison with experimental data for N _e = 1015–1019 cm–3 shows good agreement, which is substantially better at high densities than the one provided by the method of effective populations; moreover, this approach can be considered as a substantiation of the latter.