Annihilation probability density in positron scattering by He

Detalhes bibliográficos
Autor(a) principal: SILVA, Euclimar Passos da
Data de Publicação: 2001
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
Texto Completo: http://www.repositorio.ufc.br/handle/riufc/46427
Resumo: SILVA, E. P. Annihilation probability density in positron scattering by He. 2001.Artigo. Phys. Rev., 13 April 2001.
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spelling Annihilation probability density in positron scattering by HeAnnihilation probability density in positron scattering by Heannihilation probabilitySILVA, E. P. Annihilation probability density in positron scattering by He. 2001.Artigo. Phys. Rev., 13 April 2001.We have calculated annihilation probability densities in positron collisions against the He atom. Our scattering wave functions were obtained with the Schwinger multichannel method [J. S. E. Germano and M. A. P. Lima, Phys. Rev. A 47 , 3976 (1993)]. It has been found that direct annihilation, in which electronic cloud deformation shields the nuclear repulsive potential effectively attracting the positron to a binary encounter, dominates the annihilation process at low impact energies. Closer to the real positronium formation threshold, the signature of virtual positronium has been noticed. At room temperature, significant annihilation probability has been observed over a somewhat extended region.The American Physical Society2019-10-02T19:32:07Z2019-10-02T19:32:07Z2001-04-13info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfDA SILVA, E. P.http://www.repositorio.ufc.br/handle/riufc/46427SILVA, Euclimar Passos dainfo:eu-repo/semantics/openAccessengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFC2023-11-24T18:06:18Zoai:repositorio.ufc.br:riufc/46427Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:30:44.197920Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Annihilation probability density in positron scattering by He
Annihilation probability density in positron scattering by He
title Annihilation probability density in positron scattering by He
spellingShingle Annihilation probability density in positron scattering by He
SILVA, Euclimar Passos da
annihilation probability
title_short Annihilation probability density in positron scattering by He
title_full Annihilation probability density in positron scattering by He
title_fullStr Annihilation probability density in positron scattering by He
title_full_unstemmed Annihilation probability density in positron scattering by He
title_sort Annihilation probability density in positron scattering by He
author SILVA, Euclimar Passos da
author_facet SILVA, Euclimar Passos da
author_role author
dc.contributor.author.fl_str_mv SILVA, Euclimar Passos da
dc.subject.por.fl_str_mv annihilation probability
topic annihilation probability
description SILVA, E. P. Annihilation probability density in positron scattering by He. 2001.Artigo. Phys. Rev., 13 April 2001.
publishDate 2001
dc.date.none.fl_str_mv 2001-04-13
2019-10-02T19:32:07Z
2019-10-02T19:32:07Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv DA SILVA, E. P.
http://www.repositorio.ufc.br/handle/riufc/46427
identifier_str_mv DA SILVA, E. P.
url http://www.repositorio.ufc.br/handle/riufc/46427
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv The American Physical Society
publisher.none.fl_str_mv The American Physical Society
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
collection Repositório Institucional da Universidade Federal do Ceará (UFC)
repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv bu@ufc.br || repositorio@ufc.br
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