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Modeling of the radiation transfer under partial frequency redistribution

  • N. I. Kosarev
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Abstract

A model is developed of the resonance radiation transfer under partial redistribution over frequencies. The media’s condition is described via the rate population balance equations for the two-level atom. The spectral intensity of the scattered radiation is calculated according to the stationary transfer equation. The light scattering by the atoms is modeled by a linear combination of the angle-averaged redistribution functions, R II and R III. The obtained integro-differential equation system is solved numerically taking into account the radiation transfer in a cylindrical gas containing volume. The influence is investigated of the partial frequency redistribution on the sodium atom resonance line (λ = 589 nm) profile as well as on the efficient vapor afterglow duration depending on its optical thickness.

Keywords

Radiation Transfer Optical Thickness Sodium Atom Redistribution Function Atom Emission Line 
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Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • N. I. Kosarev
    • 1
  1. 1.Siberian Law Institute of the Ministry of Internal Affairs of RussiaKrasnoyarskRussia

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