Positron transport in water vapour

Transport properties of positron swarms in water vapour under the influence of electric and magnetic fields are investigated using a Monte Carlo simulation technique and a multi-term theory for solving the Boltzmann equation. Special attention is paid to the correct treatment of the nonconservative...

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Autores: Banković, A., Dujko, S., White, R.D., Marler, J.P., Buckman, Stephen J., Marjanović, S., Malović, G., García, Gustavo, Petrovic, Zoran Lj.
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/58817
Acceso en línea:http://hdl.handle.net/10261/58817
Access Level:acceso abierto
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spelling Positron transport in water vapourBanković, A.Dujko, S.White, R.D.Marler, J.P.Buckman, Stephen J.Marjanović, S.Malović, G.García, GustavoPetrovic, Zoran Lj.Transport properties of positron swarms in water vapour under the influence of electric and magnetic fields are investigated using a Monte Carlo simulation technique and a multi-term theory for solving the Boltzmann equation. Special attention is paid to the correct treatment of the nonconservative nature of positronium (Ps) formation and its explicit and implicit influences on various positron transport properties. Many interesting and atypical phenomena induced by these influences are identified and discussed. Calculated transport properties for positrons are compared with those for electrons, and the most important differences are highlighted. The significant impact of a magnetic field on non-conservative positron transport in a crossed field configuration is also investigated. In general, the mean energy and diffusion coefficients are lowered, while for the measurable drift velocity an unexpected phenomenon arises: for certain values of the reduced electric field, the magnetic field enhances the drift. The variation of transport coefficients with the reduced electric and magnetic fields is addressed using physical arguments with the goal of understanding the synergistic effects of Ps formation and magnetic field on the drift and diffusion of positrons in neutral gases. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.This work was supported by MNRS Projects ON171037 and III41011 and the Australian Research Council. SD acknowledges support from STW-project 10118, part of the Netherlands Organization for Scientific Research (NWO).Peer ReviewedInstitute of Physics Publishing2012201220122012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/58817reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/588172026-05-22T06:33:51Z
dc.title.none.fl_str_mv Positron transport in water vapour
title Positron transport in water vapour
spellingShingle Positron transport in water vapour
Banković, A.
title_short Positron transport in water vapour
title_full Positron transport in water vapour
title_fullStr Positron transport in water vapour
title_full_unstemmed Positron transport in water vapour
title_sort Positron transport in water vapour
dc.creator.none.fl_str_mv Banković, A.
Dujko, S.
White, R.D.
Marler, J.P.
Buckman, Stephen J.
Marjanović, S.
Malović, G.
García, Gustavo
Petrovic, Zoran Lj.
author Banković, A.
author_facet Banković, A.
Dujko, S.
White, R.D.
Marler, J.P.
Buckman, Stephen J.
Marjanović, S.
Malović, G.
García, Gustavo
Petrovic, Zoran Lj.
author_role author
author2 Dujko, S.
White, R.D.
Marler, J.P.
Buckman, Stephen J.
Marjanović, S.
Malović, G.
García, Gustavo
Petrovic, Zoran Lj.
author2_role author
author
author
author
author
author
author
author
description Transport properties of positron swarms in water vapour under the influence of electric and magnetic fields are investigated using a Monte Carlo simulation technique and a multi-term theory for solving the Boltzmann equation. Special attention is paid to the correct treatment of the nonconservative nature of positronium (Ps) formation and its explicit and implicit influences on various positron transport properties. Many interesting and atypical phenomena induced by these influences are identified and discussed. Calculated transport properties for positrons are compared with those for electrons, and the most important differences are highlighted. The significant impact of a magnetic field on non-conservative positron transport in a crossed field configuration is also investigated. In general, the mean energy and diffusion coefficients are lowered, while for the measurable drift velocity an unexpected phenomenon arises: for certain values of the reduced electric field, the magnetic field enhances the drift. The variation of transport coefficients with the reduced electric and magnetic fields is addressed using physical arguments with the goal of understanding the synergistic effects of Ps formation and magnetic field on the drift and diffusion of positrons in neutral gases. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/58817
url http://hdl.handle.net/10261/58817
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Institute of Physics Publishing
publisher.none.fl_str_mv Institute of Physics Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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