Effects of geometric constraints on the nuclear multifragmentation process
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/104106 |
Resumo: | We include in statistical model calculations the facts that in the nuclear multifragmentation process the fragments are produced within a given volume and have a finite size. The corrections associated with these constraints affect the partition modes and, as a consequence, other observables in the process. In particular, we find that the favored fragmenting modes strongly suppress the collective flow energy, leading to much lower values than those obtained from unconstrained calculations. For a given total excitation energy, this leads to a nontrivial correlation between the breakup temperature and the collective expansion velocity. In particular, we find that under some conditions, the temperature of the fragmenting system may increase as a function of this expansion velocity, contrary to what might be expected. |
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Souza, Sergio Ricardo de AzevedoDonangelo, Raul JoséLynch, William G.Tsang, M. B.2014-10-03T02:12:22Z20070556-2813http://hdl.handle.net/10183/104106000605426We include in statistical model calculations the facts that in the nuclear multifragmentation process the fragments are produced within a given volume and have a finite size. The corrections associated with these constraints affect the partition modes and, as a consequence, other observables in the process. In particular, we find that the favored fragmenting modes strongly suppress the collective flow energy, leading to much lower values than those obtained from unconstrained calculations. For a given total excitation energy, this leads to a nontrivial correlation between the breakup temperature and the collective expansion velocity. In particular, we find that under some conditions, the temperature of the fragmenting system may increase as a function of this expansion velocity, contrary to what might be expected.application/pdfengPhysical review. C, Nuclear physics. Melville. Vol. 76, no. 2 (Aug. 2007), 024614 6p.FragmentaçãoReações íon-pesadoFlutuaçõesFísica nuclearEffects of geometric constraints on the nuclear multifragmentation processEstrangeiroinfo: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:UFRGSORIGINAL000605426.pdf000605426.pdfTexto completo (inglês)application/pdf220886http://www.lume.ufrgs.br/bitstream/10183/104106/1/000605426.pdf7efa29aeca1d2b69d9329c66a46d8b0eMD51TEXT000605426.pdf.txt000605426.pdf.txtExtracted Texttext/plain30303http://www.lume.ufrgs.br/bitstream/10183/104106/2/000605426.pdf.txtca6748bc3849dc74860e8e9a72fec774MD52THUMBNAIL000605426.pdf.jpg000605426.pdf.jpgGenerated Thumbnailimage/jpeg1941http://www.lume.ufrgs.br/bitstream/10183/104106/3/000605426.pdf.jpg9e8b06bd79bb9f691cc5878c819eb592MD5310183/1041062020-02-22 04:21:27.552603oai:www.lume.ufrgs.br:10183/104106Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2020-02-22T07:21:27Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Effects of geometric constraints on the nuclear multifragmentation process |
title |
Effects of geometric constraints on the nuclear multifragmentation process |
spellingShingle |
Effects of geometric constraints on the nuclear multifragmentation process Souza, Sergio Ricardo de Azevedo Fragmentação Reações íon-pesado Flutuações Física nuclear |
title_short |
Effects of geometric constraints on the nuclear multifragmentation process |
title_full |
Effects of geometric constraints on the nuclear multifragmentation process |
title_fullStr |
Effects of geometric constraints on the nuclear multifragmentation process |
title_full_unstemmed |
Effects of geometric constraints on the nuclear multifragmentation process |
title_sort |
Effects of geometric constraints on the nuclear multifragmentation process |
author |
Souza, Sergio Ricardo de Azevedo |
author_facet |
Souza, Sergio Ricardo de Azevedo Donangelo, Raul José Lynch, William G. Tsang, M. B. |
author_role |
author |
author2 |
Donangelo, Raul José Lynch, William G. Tsang, M. B. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Souza, Sergio Ricardo de Azevedo Donangelo, Raul José Lynch, William G. Tsang, M. B. |
dc.subject.por.fl_str_mv |
Fragmentação Reações íon-pesado Flutuações Física nuclear |
topic |
Fragmentação Reações íon-pesado Flutuações Física nuclear |
description |
We include in statistical model calculations the facts that in the nuclear multifragmentation process the fragments are produced within a given volume and have a finite size. The corrections associated with these constraints affect the partition modes and, as a consequence, other observables in the process. In particular, we find that the favored fragmenting modes strongly suppress the collective flow energy, leading to much lower values than those obtained from unconstrained calculations. For a given total excitation energy, this leads to a nontrivial correlation between the breakup temperature and the collective expansion velocity. In particular, we find that under some conditions, the temperature of the fragmenting system may increase as a function of this expansion velocity, contrary to what might be expected. |
publishDate |
2007 |
dc.date.issued.fl_str_mv |
2007 |
dc.date.accessioned.fl_str_mv |
2014-10-03T02:12:22Z |
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 |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/104106 |
dc.identifier.issn.pt_BR.fl_str_mv |
0556-2813 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000605426 |
identifier_str_mv |
0556-2813 000605426 |
url |
http://hdl.handle.net/10183/104106 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review. C, Nuclear physics. Melville. Vol. 76, no. 2 (Aug. 2007), 024614 6p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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UFRGS |
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Repositório Institucional da UFRGS |
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Repositório Institucional da UFRGS |
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