Diffusion tensor of electron or light ion swarm in electric fields in gases

T. Makabe, T. Mori

研究成果: Article査読

16 被引用数 (Scopus)

抄録

The diffusion tensor in an isolated electron or light ion swarm subject only to elastic collisions with molecules has been formulated from the multiterm expansion of the Boltzmann equation in the hydrodynamic description. Derived diffusion coefficients for the transverse and longitudinal directions include the additional terms representative of the curvature effect under the action of an electric field besides the usual two-term expressions. Discussion is, particularly, focused on the relation between the transverse diffusion coefficient DT and its conventional expression DV. Numerical calculations have been made for the electron swarm in a model gas having a momentum transfer cross-section, Qm( epsilon )=Q0 epsilon beta ( beta =0, 1/2, 1), with isotropic scattering. It will be recognised that an appreciable degree of discrepancy occurs between DT and DV with the increase of the power beta , i.e. of the cross-sectional dependence on energy.

本文言語English
論文番号009
ページ(範囲)699-708
ページ数10
ジャーナルJournal of Physics D: Applied Physics
17
4
DOI
出版ステータスPublished - 1984 12 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 音響学および超音波学
  • 表面、皮膜および薄膜

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