Statistical model of radiation losses for heavy ions in plasmas

  • Demura A
  • Kadomtsev M
  • Lisitsa V
 et al. 
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Abstract

The new statistical approach for calculation of radiation processes with heavy multielectron ions in plasma is developed. The method consists in consideration of atomic structure as a condensed medium, characterized by the spectrum of elementary excitations with plasma frequency, determined by local atomic electron density. The radiation losses in this model are due to excitation of plasma type oscillations in atom under its collisions with plasma electrons and could be expressed in a universal statistical form for all sorts of multielectron ions. The calculations of radiation losses on tungsten ions are performed in the wide range of plasma temperature variation, typical for physics of high temperature plasma with magnetic confinement. It is shown that the universal statistical approach results are within the data scattering of current numerical codes. The proposed statistical method for description of collective excitations in complex atoms for calculations of plasma radiation losses is of general physical interest. It allows obtaining the necessary data faster with the lesser computational resources. © 2013 Pleiades Publishing, Inc.

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Authors

  • A. V. Demura

  • M. B. Kadomtsev

  • V. S. Lisitsa

  • V. A. Shurygin

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