Nonperturbative treatment of the screened-Coulomb contribution of projectile-electron loss

Detalhes bibliográficos
Autor(a) principal: Grande, Pedro Luis
Data de Publicação: 1996
Outros Autores: Schiwietz, Gregor, Sigaud, Geraldo M., Montenegro, Eduardo C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/27473
Resumo: The electron-loss cross section of He+ ions impinging upon noble-gas targets (2≤Z2≤36) is calculated by using the coupled-channel method for the active projectile electron in the static screened field of the target atom. The calculations show a saturation of the projectile-electron-loss cross section with increasing target atomic number. This saturation effect due to neutral target systems is much more pronounced than for ionization or excitation by charged particles. Comparison with experimental data indicates a small electron-loss contribution from electron-electron interaction processes for heavy targets at intermediate velocities. Remaining discrepancies in the data are discussed in the light of the approximations involved in our theoretical treatment.
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spelling Grande, Pedro LuisSchiwietz, GregorSigaud, Geraldo M.Montenegro, Eduardo C.2011-01-22T05:59:05Z19961050-2947http://hdl.handle.net/10183/27473000178115The electron-loss cross section of He+ ions impinging upon noble-gas targets (2≤Z2≤36) is calculated by using the coupled-channel method for the active projectile electron in the static screened field of the target atom. The calculations show a saturation of the projectile-electron-loss cross section with increasing target atomic number. This saturation effect due to neutral target systems is much more pronounced than for ionization or excitation by charged particles. Comparison with experimental data indicates a small electron-loss contribution from electron-electron interaction processes for heavy targets at intermediate velocities. Remaining discrepancies in the data are discussed in the light of the approximations involved in our theoretical treatment.application/pdfengPhysical review. A, Atomic, molecular, and optical physics. New York. Vol. 54, no. 4 (Oct. 1996), p. 2983-2990Física da matéria condensadaIonizacao de atomosNonperturbative treatment of the screened-Coulomb contribution of projectile-electron lossEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000178115.pdf000178115.pdfTexto completo (inglês)application/pdf735171http://www.lume.ufrgs.br/bitstream/10183/27473/1/000178115.pdf4f93bd4fc5ceeccb868b09d5f66ef151MD51TEXT000178115.pdf.txt000178115.pdf.txtExtracted Texttext/plain33783http://www.lume.ufrgs.br/bitstream/10183/27473/2/000178115.pdf.txt27c4cd60328bf32ff759651dc4e864ccMD52THUMBNAIL000178115.pdf.jpg000178115.pdf.jpgGenerated Thumbnailimage/jpeg2066http://www.lume.ufrgs.br/bitstream/10183/27473/3/000178115.pdf.jpgf72946ee1ce17c5e14bcb364f2132d69MD5310183/274732024-06-05 06:51:07.201309oai:www.lume.ufrgs.br:10183/27473Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-06-05T09:51:07Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Nonperturbative treatment of the screened-Coulomb contribution of projectile-electron loss
title Nonperturbative treatment of the screened-Coulomb contribution of projectile-electron loss
spellingShingle Nonperturbative treatment of the screened-Coulomb contribution of projectile-electron loss
Grande, Pedro Luis
Física da matéria condensada
Ionizacao de atomos
title_short Nonperturbative treatment of the screened-Coulomb contribution of projectile-electron loss
title_full Nonperturbative treatment of the screened-Coulomb contribution of projectile-electron loss
title_fullStr Nonperturbative treatment of the screened-Coulomb contribution of projectile-electron loss
title_full_unstemmed Nonperturbative treatment of the screened-Coulomb contribution of projectile-electron loss
title_sort Nonperturbative treatment of the screened-Coulomb contribution of projectile-electron loss
author Grande, Pedro Luis
author_facet Grande, Pedro Luis
Schiwietz, Gregor
Sigaud, Geraldo M.
Montenegro, Eduardo C.
author_role author
author2 Schiwietz, Gregor
Sigaud, Geraldo M.
Montenegro, Eduardo C.
author2_role author
author
author
dc.contributor.author.fl_str_mv Grande, Pedro Luis
Schiwietz, Gregor
Sigaud, Geraldo M.
Montenegro, Eduardo C.
dc.subject.por.fl_str_mv Física da matéria condensada
Ionizacao de atomos
topic Física da matéria condensada
Ionizacao de atomos
description The electron-loss cross section of He+ ions impinging upon noble-gas targets (2≤Z2≤36) is calculated by using the coupled-channel method for the active projectile electron in the static screened field of the target atom. The calculations show a saturation of the projectile-electron-loss cross section with increasing target atomic number. This saturation effect due to neutral target systems is much more pronounced than for ionization or excitation by charged particles. Comparison with experimental data indicates a small electron-loss contribution from electron-electron interaction processes for heavy targets at intermediate velocities. Remaining discrepancies in the data are discussed in the light of the approximations involved in our theoretical treatment.
publishDate 1996
dc.date.issued.fl_str_mv 1996
dc.date.accessioned.fl_str_mv 2011-01-22T05:59:05Z
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dc.identifier.issn.pt_BR.fl_str_mv 1050-2947
dc.identifier.nrb.pt_BR.fl_str_mv 000178115
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Physical review. A, Atomic, molecular, and optical physics. New York. Vol. 54, no. 4 (Oct. 1996), p. 2983-2990
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