Abstract
An exact analytical expression for the energy-averaged electron-ion momentum transport cross section in the Born approximation and Debye-Huckel exponentially screened potential has been derived and compared with the formulae given by other authors. A quantitative comparison between cut-off theory and quantum mechanical perturbation theory has been presented. Based on results from the Born approximation and Spitzer's formula, a new approximate formula for the quantum Coulomb logarithm has been derived and shown to be more accurate than previous expressions. (C) 2000 Elsevier Science B.V.
Original language | English |
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Pages (from-to) | 375-381 |
Number of pages | 7 |
Journal | Physics Letters, Section A: General, Atomic and Solid State Physics |
Volume | 268 |
Issue number | 4-6 |
DOIs | |
Publication status | Published - Apr 17 2000 |
Externally published | Yes |
Keywords
- Born approximation
- Coulomb logarithm
- Energy-averaged momentum transport cross section
- Ideal and weakly nonideal plasmas
ASJC Scopus subject areas
- Physics and Astronomy(all)