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 language | English |
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Article number | 8267474 |
Pages (from-to) | 390-394 |
Number of pages | 5 |
Journal | IEEE Transactions on Plasma Science |
Volume | 46 |
Issue number | 2 |
DOIs | |
Publication status | Published - 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