Coulomb heating of channeled H/sup + sub 2/ and H/sup + sub 3/ molecules in Si
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/104265 |
Resumo: | Si-K x-ray and backscattering yields have been measured as a function of the projectile entrance angle for atomic and molecular (H2 + and H3 +) hydrogen ions channeling at kinetic energies of 150 keV per proton along the Si k100l crystal direction. A large enhancement of the x-ray production has been observed for well-aligned H3 + molecule beams. It is shown that this effect results from the Coulomb explosion of the molecule fragments during the channeling motion. Moreover, the shape and intensity of the measured angular distribution allows a quantitative determination of the corresponding heating of the transversal ion motion (2.6±0.6 eV for H2 + and 5.1±0.8 eV for H3 + molecules) in the channel. These values are consistent with the stored potential energies per particle and they depend significantly on the collective wake forces and molecular alignment conditions. |
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Fadanelli Filho, Raul CarlosGrande, Pedro LuisBehar, MoniDias, Johnny FerrazSchiwietz, GregorDenton, Cristian D.2014-10-08T02:11:17Z20041098-0121http://hdl.handle.net/10183/104265000459219Si-K x-ray and backscattering yields have been measured as a function of the projectile entrance angle for atomic and molecular (H2 + and H3 +) hydrogen ions channeling at kinetic energies of 150 keV per proton along the Si k100l crystal direction. A large enhancement of the x-ray production has been observed for well-aligned H3 + molecule beams. It is shown that this effect results from the Coulomb explosion of the molecule fragments during the channeling motion. Moreover, the shape and intensity of the measured angular distribution allows a quantitative determination of the corresponding heating of the transversal ion motion (2.6±0.6 eV for H2 + and 5.1±0.8 eV for H3 + molecules) in the channel. These values are consistent with the stored potential energies per particle and they depend significantly on the collective wake forces and molecular alignment conditions.application/pdfengPhysical review. B, Condensedmatter and materials physics. Woodbury. Vol. 69, no. 21 (June 2004), 212104 4p.FísicaCanalizaçãoSemicondutores elementaresRetroespalhamentoSilícioIntensidade de linha espectralEspalhamento de raios-xCoulomb heating of channeled H/sup + sub 2/ and H/sup + sub 3/ molecules 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:UFRGSORIGINAL000459219.pdf000459219.pdfTexto completo (inglês)application/pdf159134http://www.lume.ufrgs.br/bitstream/10183/104265/1/000459219.pdfaeb8bd4ce70020fd8cbe471b6afa799aMD51TEXT000459219.pdf.txt000459219.pdf.txtExtracted Texttext/plain20571http://www.lume.ufrgs.br/bitstream/10183/104265/2/000459219.pdf.txt08ef2df32bcd4ebd9f950f5bff9ef6b8MD52THUMBNAIL000459219.pdf.jpg000459219.pdf.jpgGenerated Thumbnailimage/jpeg1906http://www.lume.ufrgs.br/bitstream/10183/104265/3/000459219.pdf.jpgc0b32c6fb8e5866685814c59cf98ecb3MD5310183/1042652023-08-19 03:32:16.089239oai:www.lume.ufrgs.br:10183/104265Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-19T06:32:16Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Coulomb heating of channeled H/sup + sub 2/ and H/sup + sub 3/ molecules in Si |
title |
Coulomb heating of channeled H/sup + sub 2/ and H/sup + sub 3/ molecules in Si |
spellingShingle |
Coulomb heating of channeled H/sup + sub 2/ and H/sup + sub 3/ molecules in Si Fadanelli Filho, Raul Carlos Física Canalização Semicondutores elementares Retroespalhamento Silício Intensidade de linha espectral Espalhamento de raios-x |
title_short |
Coulomb heating of channeled H/sup + sub 2/ and H/sup + sub 3/ molecules in Si |
title_full |
Coulomb heating of channeled H/sup + sub 2/ and H/sup + sub 3/ molecules in Si |
title_fullStr |
Coulomb heating of channeled H/sup + sub 2/ and H/sup + sub 3/ molecules in Si |
title_full_unstemmed |
Coulomb heating of channeled H/sup + sub 2/ and H/sup + sub 3/ molecules in Si |
title_sort |
Coulomb heating of channeled H/sup + sub 2/ and H/sup + sub 3/ molecules in Si |
author |
Fadanelli Filho, Raul Carlos |
author_facet |
Fadanelli Filho, Raul Carlos Grande, Pedro Luis Behar, Moni Dias, Johnny Ferraz Schiwietz, Gregor Denton, Cristian D. |
author_role |
author |
author2 |
Grande, Pedro Luis Behar, Moni Dias, Johnny Ferraz Schiwietz, Gregor Denton, Cristian D. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Fadanelli Filho, Raul Carlos Grande, Pedro Luis Behar, Moni Dias, Johnny Ferraz Schiwietz, Gregor Denton, Cristian D. |
dc.subject.por.fl_str_mv |
Física Canalização Semicondutores elementares Retroespalhamento Silício Intensidade de linha espectral Espalhamento de raios-x |
topic |
Física Canalização Semicondutores elementares Retroespalhamento Silício Intensidade de linha espectral Espalhamento de raios-x |
description |
Si-K x-ray and backscattering yields have been measured as a function of the projectile entrance angle for atomic and molecular (H2 + and H3 +) hydrogen ions channeling at kinetic energies of 150 keV per proton along the Si k100l crystal direction. A large enhancement of the x-ray production has been observed for well-aligned H3 + molecule beams. It is shown that this effect results from the Coulomb explosion of the molecule fragments during the channeling motion. Moreover, the shape and intensity of the measured angular distribution allows a quantitative determination of the corresponding heating of the transversal ion motion (2.6±0.6 eV for H2 + and 5.1±0.8 eV for H3 + molecules) in the channel. These values are consistent with the stored potential energies per particle and they depend significantly on the collective wake forces and molecular alignment conditions. |
publishDate |
2004 |
dc.date.issued.fl_str_mv |
2004 |
dc.date.accessioned.fl_str_mv |
2014-10-08T02:11:17Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/104265 |
dc.identifier.issn.pt_BR.fl_str_mv |
1098-0121 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000459219 |
identifier_str_mv |
1098-0121 000459219 |
url |
http://hdl.handle.net/10183/104265 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review. B, Condensedmatter and materials physics. Woodbury. Vol. 69, no. 21 (June 2004), 212104 4p. |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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