On the Cutoff Distance and the Classical Energy-Averaged Electron-Ion Momentum Transport Cross Section in Ideal and Nonideal Plasmas

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Abstract

The wide use of a speed-independent distance as a cutoff impact parameter together with Rutherford's scattering formula, within the cutoff theory, to account for charge screening in plasma environment embodies a clear inconsistency. A new physically justified choice of the cutoff distance is introduced and used to derive a closed form expression for the effective momentum transport cross section. A simple approximation for the present Coulomb logarithm, free of special functions, is also presented and assessed. A comparison with experimentally recovered data for the reduced Coulomb conductivity showed better agreement and better physical behavior of the present expressions compared with previous cutoff expressions in the literature.

Original languageEnglish
Article number8267474
Pages (from-to)390-394
Number of pages5
JournalIEEE Transactions on Plasma Science
Volume46
Issue number2
DOIs
Publication statusPublished - Feb 2018

Keywords

  • Coulomb logarithm
  • cutoff distance
  • ideal and nonideal plasmas
  • momentum transport cross section

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

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