The spreading width calculation of giant resonances with a semi-microscopic approach

Detalhes bibliográficos
Autor(a) principal: Leite,T. N.
Data de Publicação: 2006
Outros Autores: Teruya,N.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Physics
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000700026
Resumo: We have proposed a semi-microscopic approach to calculate the two particles - two holes (2p - 2h) spreading width of giant resonances. Our proposal has been based in a hybrid method that implements the statistical multistep compound theory of Feshbach, Kerman and Koonin (FKK), widely and successful used in nuclear reactions mechanisms, in order to include relevant informations about the microscopic structure obtained by the Random Phase Approximation (RPA) calculations. This method is an approximative calculation to avoid the intrinsic numerical difficulties of those microscopic calculations that incorporate more complex structure than one particle - one hole (1p - 1h) excitations. Unlike the reaction context, the residual interaction was adjusted in RPA calculation to reproduce the lowest energy levels of the studied nuclei. The feasibility and the efficiency of the approach has been tested in giant dipole resonances in 208Pb and neutron-rich calcium isotopes, 48Ca and 60Ca.
id SBF-2_9feea872ec4218efe82a2a3c779fd263
oai_identifier_str oai:scielo:S0103-97332006000700026
network_acronym_str SBF-2
network_name_str Brazilian Journal of Physics
repository_id_str
spelling The spreading width calculation of giant resonances with a semi-microscopic approachGiant ResonanceStatistical Multistep Compound TheoryRandom Phase ApproximationSpreading WidthWe have proposed a semi-microscopic approach to calculate the two particles - two holes (2p - 2h) spreading width of giant resonances. Our proposal has been based in a hybrid method that implements the statistical multistep compound theory of Feshbach, Kerman and Koonin (FKK), widely and successful used in nuclear reactions mechanisms, in order to include relevant informations about the microscopic structure obtained by the Random Phase Approximation (RPA) calculations. This method is an approximative calculation to avoid the intrinsic numerical difficulties of those microscopic calculations that incorporate more complex structure than one particle - one hole (1p - 1h) excitations. Unlike the reaction context, the residual interaction was adjusted in RPA calculation to reproduce the lowest energy levels of the studied nuclei. The feasibility and the efficiency of the approach has been tested in giant dipole resonances in 208Pb and neutron-rich calcium isotopes, 48Ca and 60Ca.Sociedade Brasileira de Física2006-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000700026Brazilian Journal of Physics v.36 n.4a 2006reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332006000700026info:eu-repo/semantics/openAccessLeite,T. N.Teruya,N.eng2007-06-21T00:00:00Zoai:scielo:S0103-97332006000700026Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2007-06-21T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false
dc.title.none.fl_str_mv The spreading width calculation of giant resonances with a semi-microscopic approach
title The spreading width calculation of giant resonances with a semi-microscopic approach
spellingShingle The spreading width calculation of giant resonances with a semi-microscopic approach
Leite,T. N.
Giant Resonance
Statistical Multistep Compound Theory
Random Phase Approximation
Spreading Width
title_short The spreading width calculation of giant resonances with a semi-microscopic approach
title_full The spreading width calculation of giant resonances with a semi-microscopic approach
title_fullStr The spreading width calculation of giant resonances with a semi-microscopic approach
title_full_unstemmed The spreading width calculation of giant resonances with a semi-microscopic approach
title_sort The spreading width calculation of giant resonances with a semi-microscopic approach
author Leite,T. N.
author_facet Leite,T. N.
Teruya,N.
author_role author
author2 Teruya,N.
author2_role author
dc.contributor.author.fl_str_mv Leite,T. N.
Teruya,N.
dc.subject.por.fl_str_mv Giant Resonance
Statistical Multistep Compound Theory
Random Phase Approximation
Spreading Width
topic Giant Resonance
Statistical Multistep Compound Theory
Random Phase Approximation
Spreading Width
description We have proposed a semi-microscopic approach to calculate the two particles - two holes (2p - 2h) spreading width of giant resonances. Our proposal has been based in a hybrid method that implements the statistical multistep compound theory of Feshbach, Kerman and Koonin (FKK), widely and successful used in nuclear reactions mechanisms, in order to include relevant informations about the microscopic structure obtained by the Random Phase Approximation (RPA) calculations. This method is an approximative calculation to avoid the intrinsic numerical difficulties of those microscopic calculations that incorporate more complex structure than one particle - one hole (1p - 1h) excitations. Unlike the reaction context, the residual interaction was adjusted in RPA calculation to reproduce the lowest energy levels of the studied nuclei. The feasibility and the efficiency of the approach has been tested in giant dipole resonances in 208Pb and neutron-rich calcium isotopes, 48Ca and 60Ca.
publishDate 2006
dc.date.none.fl_str_mv 2006-12-01
dc.type.driver.fl_str_mv 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://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000700026
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000700026
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-97332006000700026
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Física
publisher.none.fl_str_mv Sociedade Brasileira de Física
dc.source.none.fl_str_mv Brazilian Journal of Physics v.36 n.4a 2006
reponame:Brazilian Journal of Physics
instname:Sociedade Brasileira de Física (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Física (SBF)
instacron_str SBF
institution SBF
reponame_str Brazilian Journal of Physics
collection Brazilian Journal of Physics
repository.name.fl_str_mv Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)
repository.mail.fl_str_mv sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br
_version_ 1754734863440674816

Registros relacionados