Giant Barkas effect observed for light ions channeling in Si

Detalhes bibliográficos
Autor(a) principal: Azevedo, Gustavo de Medeiros
Data de Publicação: 2001
Outros Autores: Grande, Pedro Luis, Behar, Moni, Dias, Johnny Ferraz, Schiwietz, Gregor
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/100093
Resumo: Measurements of the electronic energy loss are presented for ⁴He and ⁷Li ions channeling along the Si main axial directions at intermediate to high projectile energies. The Barkas effect, an energy-loss enhancement proportional to the third power of the projectile charge at high energies, is clearly separated from other processes. It reaches about 50% for Li ions channeling along the Si <110> direction. The observed Barkas contribution from the valence-electron gas is in fair agreement with the Lindhard model.
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spelling Azevedo, Gustavo de MedeirosGrande, Pedro LuisBehar, MoniDias, Johnny FerrazSchiwietz, Gregor2014-08-12T02:10:22Z20010031-9007http://hdl.handle.net/10183/100093000284176Measurements of the electronic energy loss are presented for ⁴He and ⁷Li ions channeling along the Si main axial directions at intermediate to high projectile energies. The Barkas effect, an energy-loss enhancement proportional to the third power of the projectile charge at high energies, is clearly separated from other processes. It reaches about 50% for Li ions channeling along the Si <110> direction. The observed Barkas contribution from the valence-electron gas is in fair agreement with the Lindhard model.application/pdfengPhysical review letters. Melville. Vol. 86, no. 8 (Feb. 2001), 1482-1485FísicaGiant Barkas effect observed for light ions channeling in SiEstrangeiroinfo: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:UFRGSORIGINAL000284176.pdf000284176.pdfTexto completo (inglês)application/pdf114447http://www.lume.ufrgs.br/bitstream/10183/100093/1/000284176.pdfe3d151d25d09759a7572180e5d387874MD51TEXT000284176.pdf.txt000284176.pdf.txtExtracted Texttext/plain20425http://www.lume.ufrgs.br/bitstream/10183/100093/2/000284176.pdf.txt9034157d98c6053f7f9e8b82701513aaMD52THUMBNAIL000284176.pdf.jpg000284176.pdf.jpgGenerated Thumbnailimage/jpeg2109http://www.lume.ufrgs.br/bitstream/10183/100093/3/000284176.pdf.jpga402fa0bd6ac1d4d88ab07b638e1a895MD5310183/1000932024-05-30 05:34:09.830626oai:www.lume.ufrgs.br:10183/100093Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-05-30T08:34:09Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Giant Barkas effect observed for light ions channeling in Si
title Giant Barkas effect observed for light ions channeling in Si
spellingShingle Giant Barkas effect observed for light ions channeling in Si
Azevedo, Gustavo de Medeiros
Física
title_short Giant Barkas effect observed for light ions channeling in Si
title_full Giant Barkas effect observed for light ions channeling in Si
title_fullStr Giant Barkas effect observed for light ions channeling in Si
title_full_unstemmed Giant Barkas effect observed for light ions channeling in Si
title_sort Giant Barkas effect observed for light ions channeling in Si
author Azevedo, Gustavo de Medeiros
author_facet Azevedo, Gustavo de Medeiros
Grande, Pedro Luis
Behar, Moni
Dias, Johnny Ferraz
Schiwietz, Gregor
author_role author
author2 Grande, Pedro Luis
Behar, Moni
Dias, Johnny Ferraz
Schiwietz, Gregor
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Azevedo, Gustavo de Medeiros
Grande, Pedro Luis
Behar, Moni
Dias, Johnny Ferraz
Schiwietz, Gregor
dc.subject.por.fl_str_mv Física
topic Física
description Measurements of the electronic energy loss are presented for ⁴He and ⁷Li ions channeling along the Si main axial directions at intermediate to high projectile energies. The Barkas effect, an energy-loss enhancement proportional to the third power of the projectile charge at high energies, is clearly separated from other processes. It reaches about 50% for Li ions channeling along the Si <110> direction. The observed Barkas contribution from the valence-electron gas is in fair agreement with the Lindhard model.
publishDate 2001
dc.date.issued.fl_str_mv 2001
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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. Melville. Vol. 86, no. 8 (Feb. 2001), 1482-1485
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