Positron transport in molecular gases in crossed electric and magnetic fields
Date
2011
Authors
Bankovic, A
Dujko, S
White, Ronald Douglas
Malovic, G.
Buckman, Stephen
Petrovic, Z Lj
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Volume Title
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Institute of Physics Publishing
Abstract
Transport properties of positron swarms drifting and diffusing in neutral gases under the influence of crossed electric and magnetic fields are investigated using a multi-term theory for solving the Boltzmann equation and Monte Carlo simulation technique. In the presence of magnetic fields the number of transport properties is increased compared to the situation when the positron swarm is acted on solely by an electric field. Since the longitudinal and transverse components of the drift velocity show different sensitivities with respect to the strength of the magnetic field, it is found that the negative differential conductivity effect in a crossed field configuration can be controlled through the variation of the magnetic field strengths. Various diffusion tensor elements also exhibit different sensitivities with respect to the magnetic field and also with respect to the positronium (Ps) formation process.
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Keywords
Keywords: Crossed electric and magnetic fields; Crossed fields; Diffusion tensor; Drift velocities; Magnetic field strengths; Molecular gas; Monte carlo simulation technique; Negative differential conductivities; Neutral gas; Positronium formation; Transverse compo
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Source
Journal of Physics: Conference Series
Type
Conference paper
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Open Access
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Restricted until
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