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Effects of temperature and electron collision frequency on the elastic electron–ion collisions in a collisional plasma

Published online by Cambridge University Press:  30 January 2013

YOUNG-DAE JUNG
Affiliation:
Department of Applied Physics, Hanyang University, Ansan, Kyunggi-Do 426-791, South Korea, and Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY 12180-3590, USA ([email protected])
WOO-PYO HONG
Affiliation:
Department of Electronics Engineering, Catholic University of Daegu, Hayang, Gyongsan, Gyungbuk 712-702, South Korea

Abstract

The effects of dynamic temperature and electron–electron collisions on the elastic electron–ion collision are investigated in a collisional plasma. The second-order eikonal analysis and the velocity-dependent screening length are employed to derive the eikonal phase shift and eikonal cross section as functions of collision energy, electron collision frequency, Debye length, impact parameter, and thermal energy. It is interesting to find out that the electron–electron collision effect would be vanished; however, the dynamic temperature effect is included in the first-order approximation. We have found that the dynamic temperature effect strongly enhances the eikonal phase shift as well as the eikonal cross section for electron–ion collision since the dynamic screening increases the effective shielding distance. In addition, the detailed characteristic behavior of the dynamic screening function is also discussed.

Type
Papers
Copyright
Copyright © Cambridge University Press 2013 

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