Temporal relaxation of the electron transport properties in magnetized plasma discharges

Dujko, Sasa, White, Ronald, and Petrovic, Zoran (2009) Temporal relaxation of the electron transport properties in magnetized plasma discharges. In: Proceedings of 40th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics (54). From: 40th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics, 19-23 May 2009, Charlottesville, Virginia, USA.

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Abstract

The progress and further improvements of modern technology associated with the non-equilibrium magnetized plasma discharges require the most accurate modeling of charged particle transport under the influence of electric (E) and magnetic (B) fields in neutral gases. In this work, the temporal relaxation of electrons in gases under the influence of dc E and B fields crossed at arbitrary angle is studied via a multi term solution of the Boltzmann equation and Monte Carlo simulation technique. We systematically investigate the explicit effects associated with the E and B fields and field orientations. In particular, we highlight the explicit modification of transport coefficients about by non-conservative collisional processes of attachment and ionization. Among many interesting kinetic phenomena observed for the first time in this work, we note the existence of the transiently negative diffusivity. We systematically study the origin and mechanisms for such phenomena, their sometimes paradoxical manifestation and possible physical implications which arise from their explicit inclusion into plasma models.

Item ID: 11097
Item Type: Conference Item (Abstract / Summary)
Additional Information:

Abstract ID: BAPS.2009.DAMOP.T1.71

Date Deposited: 28 May 2010 01:26
FoR Codes: 02 PHYSICAL SCIENCES > 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics > 020204 Plasma Physics; Fusion Plasmas; Electrical Discharges @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 100%
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