Indications for enhanced Auger-electron absorption in a hot-electron gas

Detalhes bibliográficos
Autor(a) principal: Schiwietz, Gregor
Data de Publicação: 2007
Outros Autores: Roth, Melanie, Czerski, Konrad, Staufenbiel, Friedrich, Grande, Pedro Luis
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/99401
Resumo: Solid-state Auger-electron angular distributions are known to be largely independent of the type of excitation, following roughly a cosine law for low ejection energies. In this Letter it is shown that the iontrack dynamics and the corresponding high electron temperatures lead to significant variations of these Auger distributions. Ratios for different degrees of inner-shell ionization versus angle are sensitive to the high-energy-deposition density. The ratios show a minimum for emission angles close to the ion-track direction, consistent with enhanced inelastic electron-energy losses or electron absorption, respectively. Thus Auger-electron yields are influenced by the spatial electronic excitation distribution.
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spelling Schiwietz, GregorRoth, MelanieCzerski, KonradStaufenbiel, FriedrichGrande, Pedro Luis2014-08-09T02:11:35Z20070031-9007http://hdl.handle.net/10183/99401000616562Solid-state Auger-electron angular distributions are known to be largely independent of the type of excitation, following roughly a cosine law for low ejection energies. In this Letter it is shown that the iontrack dynamics and the corresponding high electron temperatures lead to significant variations of these Auger distributions. Ratios for different degrees of inner-shell ionization versus angle are sensitive to the high-energy-deposition density. The ratios show a minimum for emission angles close to the ion-track direction, consistent with enhanced inelastic electron-energy losses or electron absorption, respectively. Thus Auger-electron yields are influenced by the spatial electronic excitation distribution.application/pdfengPhysical review letters. Vol. 99, no. 19 (Nov. 2007), 197602 4p.Poder de freamento nuclearCarbonoMetaisSólidosEspectros de elétrons AugerIndications for enhanced Auger-electron absorption in a hot-electron gasEstrangeiroinfo: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:UFRGSORIGINAL000616562.pdf000616562.pdfTexto completo (inglês)application/pdf358378http://www.lume.ufrgs.br/bitstream/10183/99401/1/000616562.pdf81df47388adfdf08266d51bafd244085MD51TEXT000616562.pdf.txt000616562.pdf.txtExtracted Texttext/plain20161http://www.lume.ufrgs.br/bitstream/10183/99401/2/000616562.pdf.txt42efeb15791bba21ae72d62ef080b2c5MD52THUMBNAIL000616562.pdf.jpg000616562.pdf.jpgGenerated Thumbnailimage/jpeg2122http://www.lume.ufrgs.br/bitstream/10183/99401/3/000616562.pdf.jpg16002cf900954242553066ef0197625dMD5310183/994012024-05-29 06:42:39.231173oai:www.lume.ufrgs.br:10183/99401Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-05-29T09:42:39Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Indications for enhanced Auger-electron absorption in a hot-electron gas
title Indications for enhanced Auger-electron absorption in a hot-electron gas
spellingShingle Indications for enhanced Auger-electron absorption in a hot-electron gas
Schiwietz, Gregor
Poder de freamento nuclear
Carbono
Metais
Sólidos
Espectros de elétrons Auger
title_short Indications for enhanced Auger-electron absorption in a hot-electron gas
title_full Indications for enhanced Auger-electron absorption in a hot-electron gas
title_fullStr Indications for enhanced Auger-electron absorption in a hot-electron gas
title_full_unstemmed Indications for enhanced Auger-electron absorption in a hot-electron gas
title_sort Indications for enhanced Auger-electron absorption in a hot-electron gas
author Schiwietz, Gregor
author_facet Schiwietz, Gregor
Roth, Melanie
Czerski, Konrad
Staufenbiel, Friedrich
Grande, Pedro Luis
author_role author
author2 Roth, Melanie
Czerski, Konrad
Staufenbiel, Friedrich
Grande, Pedro Luis
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Schiwietz, Gregor
Roth, Melanie
Czerski, Konrad
Staufenbiel, Friedrich
Grande, Pedro Luis
dc.subject.por.fl_str_mv Poder de freamento nuclear
Carbono
Metais
Sólidos
Espectros de elétrons Auger
topic Poder de freamento nuclear
Carbono
Metais
Sólidos
Espectros de elétrons Auger
description Solid-state Auger-electron angular distributions are known to be largely independent of the type of excitation, following roughly a cosine law for low ejection energies. In this Letter it is shown that the iontrack dynamics and the corresponding high electron temperatures lead to significant variations of these Auger distributions. Ratios for different degrees of inner-shell ionization versus angle are sensitive to the high-energy-deposition density. The ratios show a minimum for emission angles close to the ion-track direction, consistent with enhanced inelastic electron-energy losses or electron absorption, respectively. Thus Auger-electron yields are influenced by the spatial electronic excitation distribution.
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2014-08-09T02:11:35Z
dc.type.driver.fl_str_mv Estrangeiro
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/99401
dc.identifier.issn.pt_BR.fl_str_mv 0031-9007
dc.identifier.nrb.pt_BR.fl_str_mv 000616562
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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 letters. Vol. 99, no. 19 (Nov. 2007), 197602 4p.
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