Theoretical analysis of Li-8+Pb-208 reaction and the critical angular momentum for complete fusion
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.nuclphysa.2020.121700 http://hdl.handle.net/11449/196685 |
Resumo: | In a theoretical approach, the complete and incomplete fusions are investigated by considering the Li-8 + Pb-208 reaction, within a three-body model where the projectile is described as n-Li-7 with binding energy epsilon(b). By decreasing epsilon(b) from its known experimental value, the complete fusion is shown to have no meaningful dependence on such variations, whereas the incomplete fusion strongly depends on that. The complete and incomplete fusion cross sections are calculated by using a combination of both continuum-discretized coupled-channel and sum-rule models. To this end, an incident-energy dependent cut-off angular momentum L-c is first obtained by using the available complete fusion experimental data, within an approach which is extended to model results obtained for other incident-energies. An approximated fitted expression linking L-c to the well-known critical value L-crit derived by Wilczynski (1973) [28] suggests that the sum-rule model could be generalized to energies around and below the Coulomb barrier. (C) 2020 Elsevier B.V. All rights reserved. |
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Theoretical analysis of Li-8+Pb-208 reaction and the critical angular momentum for complete fusionNuclear fusion reactionsCross sectionsOne-neutron halo nucleiLithium-8Pb-208Critical angular momentumIn a theoretical approach, the complete and incomplete fusions are investigated by considering the Li-8 + Pb-208 reaction, within a three-body model where the projectile is described as n-Li-7 with binding energy epsilon(b). By decreasing epsilon(b) from its known experimental value, the complete fusion is shown to have no meaningful dependence on such variations, whereas the incomplete fusion strongly depends on that. The complete and incomplete fusion cross sections are calculated by using a combination of both continuum-discretized coupled-channel and sum-rule models. To this end, an incident-energy dependent cut-off angular momentum L-c is first obtained by using the available complete fusion experimental data, within an approach which is extended to model results obtained for other incident-energies. An approximated fitted expression linking L-c to the well-known critical value L-crit derived by Wilczynski (1973) [28] suggests that the sum-rule model could be generalized to energies around and below the Coulomb barrier. (C) 2020 Elsevier B.V. All rights reserved.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ South Africa, Dept Phys, POB 392, ZA-0003 Pretoria, South AfricaUniv Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, SP, BrazilUniv Fed Fluminense, Inst Fis, Ave Litoranea S-N, BR-24210340 Niteroi, RJ, BrazilUniv Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, SP, BrazilCNPq: 464898/2014-5CNPq: 306191-2014-8FAPESP: 2017/05660-0Elsevier B.V.Univ South AfricaUniversidade Estadual Paulista (Unesp)Universidade do Estado do Rio de Janeiro (UERJ)Mukeru, B. [UNESP]Lekala, M. L.Lubian, J.Tomio, Lauro [UNESP]2020-12-10T19:52:59Z2020-12-10T19:52:59Z2020-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article14http://dx.doi.org/10.1016/j.nuclphysa.2020.121700Nuclear Physics A. Amsterdam: Elsevier, v. 996, 14 p., 2020.0375-9474http://hdl.handle.net/11449/19668510.1016/j.nuclphysa.2020.121700WOS:000519669400004Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengNuclear Physics Ainfo:eu-repo/semantics/openAccess2021-10-23T09:20:05Zoai:repositorio.unesp.br:11449/196685Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T09:20:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Theoretical analysis of Li-8+Pb-208 reaction and the critical angular momentum for complete fusion |
title |
Theoretical analysis of Li-8+Pb-208 reaction and the critical angular momentum for complete fusion |
spellingShingle |
Theoretical analysis of Li-8+Pb-208 reaction and the critical angular momentum for complete fusion Mukeru, B. [UNESP] Nuclear fusion reactions Cross sections One-neutron halo nuclei Lithium-8 Pb-208 Critical angular momentum |
title_short |
Theoretical analysis of Li-8+Pb-208 reaction and the critical angular momentum for complete fusion |
title_full |
Theoretical analysis of Li-8+Pb-208 reaction and the critical angular momentum for complete fusion |
title_fullStr |
Theoretical analysis of Li-8+Pb-208 reaction and the critical angular momentum for complete fusion |
title_full_unstemmed |
Theoretical analysis of Li-8+Pb-208 reaction and the critical angular momentum for complete fusion |
title_sort |
Theoretical analysis of Li-8+Pb-208 reaction and the critical angular momentum for complete fusion |
author |
Mukeru, B. [UNESP] |
author_facet |
Mukeru, B. [UNESP] Lekala, M. L. Lubian, J. Tomio, Lauro [UNESP] |
author_role |
author |
author2 |
Lekala, M. L. Lubian, J. Tomio, Lauro [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Univ South Africa Universidade Estadual Paulista (Unesp) Universidade do Estado do Rio de Janeiro (UERJ) |
dc.contributor.author.fl_str_mv |
Mukeru, B. [UNESP] Lekala, M. L. Lubian, J. Tomio, Lauro [UNESP] |
dc.subject.por.fl_str_mv |
Nuclear fusion reactions Cross sections One-neutron halo nuclei Lithium-8 Pb-208 Critical angular momentum |
topic |
Nuclear fusion reactions Cross sections One-neutron halo nuclei Lithium-8 Pb-208 Critical angular momentum |
description |
In a theoretical approach, the complete and incomplete fusions are investigated by considering the Li-8 + Pb-208 reaction, within a three-body model where the projectile is described as n-Li-7 with binding energy epsilon(b). By decreasing epsilon(b) from its known experimental value, the complete fusion is shown to have no meaningful dependence on such variations, whereas the incomplete fusion strongly depends on that. The complete and incomplete fusion cross sections are calculated by using a combination of both continuum-discretized coupled-channel and sum-rule models. To this end, an incident-energy dependent cut-off angular momentum L-c is first obtained by using the available complete fusion experimental data, within an approach which is extended to model results obtained for other incident-energies. An approximated fitted expression linking L-c to the well-known critical value L-crit derived by Wilczynski (1973) [28] suggests that the sum-rule model could be generalized to energies around and below the Coulomb barrier. (C) 2020 Elsevier B.V. All rights reserved. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-10T19:52:59Z 2020-12-10T19:52:59Z 2020-04-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.nuclphysa.2020.121700 Nuclear Physics A. Amsterdam: Elsevier, v. 996, 14 p., 2020. 0375-9474 http://hdl.handle.net/11449/196685 10.1016/j.nuclphysa.2020.121700 WOS:000519669400004 |
url |
http://dx.doi.org/10.1016/j.nuclphysa.2020.121700 http://hdl.handle.net/11449/196685 |
identifier_str_mv |
Nuclear Physics A. Amsterdam: Elsevier, v. 996, 14 p., 2020. 0375-9474 10.1016/j.nuclphysa.2020.121700 WOS:000519669400004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Nuclear Physics A |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
14 |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964606859313152 |