On the existence of transiently negative diffusion coefficients for electrons in gases in E x B fields

Journal Publication ResearchOnline@JCU
White, R.D.;Dujko, S.;Ness, K.F.;Robson, R.E.;Raspopovic, Z.;Petrovic, Z.Lj.
Ron White
Abstract

A recent study (Raspopović Z et al 2000 J. Phys. D: Appl. Phys. 33 1298) reported the existence of negative diagonal diffusion tensor elements for electrons in a neutral gas under the influence of crossed radiofrequency electric and magnetic fields. In this paper we demonstrate, using a time-dependent multi-term solution of the Boltzmann equation and time-resolved Monte Carlo simulation, that this phenomenon is a transient relaxation effect obtainable under dc crossed field conditions.

Journal

Journal of Physics D: Applied Physics

Publication Name

Journal of Physics D: applied physics

Volume

41

ISBN/ISSN

1361-6463

Edition

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Issue

2

Pages Count

7

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Publisher

Institute of Physics Publishing

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Date

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EISSN

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DOI

10.1088/0022-3727/41/2/025206