The neutron skin thickness from the measured electric dipole polarizability in 68Ni, 120Sn, and 208Pb

The information on the symmetry energy and its density dependence is deduced by comparing the available data on the electric dipole polarizability αD of 68Ni, 120Sn, and 208Pb with the predictions of the random-phase approximation, using a representative set of nuclear energy density functionals. Th...

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Authors: Roca Maza, Xavier, Viñas Gausí, Xavier, Centelles Aixalà, Mario, Brenna, M., Agrawal, B. K., Colò, G., Paar, N., Piekarewicz, J., Vretenar, D.
Format: article
Status:Published version
Publication Date:2015
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/96040
Online Access:https://hdl.handle.net/2445/96040
Access Level:Open access
Keyword:Física nuclear
Astrofísica
Polarització (Física nuclear)
Nuclear physics
Astrophysics
Polarization (Nuclear physics)
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spelling The neutron skin thickness from the measured electric dipole polarizability in 68Ni, 120Sn, and 208PbRoca Maza, XavierViñas Gausí, XavierCentelles Aixalà, MarioBrenna, M.Agrawal, B. K.Colò, G.Paar, N.Piekarewicz, J.Vretenar, D.Física nuclearAstrofísicaPolarització (Física nuclear)Nuclear physicsAstrophysicsPolarization (Nuclear physics)The information on the symmetry energy and its density dependence is deduced by comparing the available data on the electric dipole polarizability αD of 68Ni, 120Sn, and 208Pb with the predictions of the random-phase approximation, using a representative set of nuclear energy density functionals. The calculated values of αD are used to validate different correlations involving αD, the symmetry energy at the saturation density J , the corresponding slope parameter L, and the neutron skin thickness rnp, as suggested by the droplet model. A subset of models that reproduce simultaneously the measured polarizabilities in 68Ni, 120Sn, and 208Pb are employed to predict the values of the symmetry energy parameters at saturation density and rnp. The resulting intervals are J =30-35 MeV, L=20-66 MeV; and the values for rnp in 68Ni, 120Sn, and 208Pb are in the ranges 0.15-0.19, 0.12-0.16, and 0.13-0.19 fm, respectively. The strong correlation between the electric dipole polarizabilities of two nuclei is instrumental to predict the values of electric dipole polarizabilities in other nuclei.American Physical Society2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/96040Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevC.92.064304Physical Review C, 2015, vol. 92, num. 6, p. 064304-1-064304-11http://dx.doi.org/10.1103/PhysRevC.92.064304(c) American Physical Society, 2015info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/960402026-05-27T06:46:51Z
dc.title.none.fl_str_mv The neutron skin thickness from the measured electric dipole polarizability in 68Ni, 120Sn, and 208Pb
title The neutron skin thickness from the measured electric dipole polarizability in 68Ni, 120Sn, and 208Pb
spellingShingle The neutron skin thickness from the measured electric dipole polarizability in 68Ni, 120Sn, and 208Pb
Roca Maza, Xavier
Física nuclear
Astrofísica
Polarització (Física nuclear)
Nuclear physics
Astrophysics
Polarization (Nuclear physics)
title_short The neutron skin thickness from the measured electric dipole polarizability in 68Ni, 120Sn, and 208Pb
title_full The neutron skin thickness from the measured electric dipole polarizability in 68Ni, 120Sn, and 208Pb
title_fullStr The neutron skin thickness from the measured electric dipole polarizability in 68Ni, 120Sn, and 208Pb
title_full_unstemmed The neutron skin thickness from the measured electric dipole polarizability in 68Ni, 120Sn, and 208Pb
title_sort The neutron skin thickness from the measured electric dipole polarizability in 68Ni, 120Sn, and 208Pb
dc.creator.none.fl_str_mv Roca Maza, Xavier
Viñas Gausí, Xavier
Centelles Aixalà, Mario
Brenna, M.
Agrawal, B. K.
Colò, G.
Paar, N.
Piekarewicz, J.
Vretenar, D.
author Roca Maza, Xavier
author_facet Roca Maza, Xavier
Viñas Gausí, Xavier
Centelles Aixalà, Mario
Brenna, M.
Agrawal, B. K.
Colò, G.
Paar, N.
Piekarewicz, J.
Vretenar, D.
author_role author
author2 Viñas Gausí, Xavier
Centelles Aixalà, Mario
Brenna, M.
Agrawal, B. K.
Colò, G.
Paar, N.
Piekarewicz, J.
Vretenar, D.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Física nuclear
Astrofísica
Polarització (Física nuclear)
Nuclear physics
Astrophysics
Polarization (Nuclear physics)
topic Física nuclear
Astrofísica
Polarització (Física nuclear)
Nuclear physics
Astrophysics
Polarization (Nuclear physics)
description The information on the symmetry energy and its density dependence is deduced by comparing the available data on the electric dipole polarizability αD of 68Ni, 120Sn, and 208Pb with the predictions of the random-phase approximation, using a representative set of nuclear energy density functionals. The calculated values of αD are used to validate different correlations involving αD, the symmetry energy at the saturation density J , the corresponding slope parameter L, and the neutron skin thickness rnp, as suggested by the droplet model. A subset of models that reproduce simultaneously the measured polarizabilities in 68Ni, 120Sn, and 208Pb are employed to predict the values of the symmetry energy parameters at saturation density and rnp. The resulting intervals are J =30-35 MeV, L=20-66 MeV; and the values for rnp in 68Ni, 120Sn, and 208Pb are in the ranges 0.15-0.19, 0.12-0.16, and 0.13-0.19 fm, respectively. The strong correlation between the electric dipole polarizabilities of two nuclei is instrumental to predict the values of electric dipole polarizabilities in other nuclei.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/96040
url https://hdl.handle.net/2445/96040
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevC.92.064304
Physical Review C, 2015, vol. 92, num. 6, p. 064304-1-064304-11
http://dx.doi.org/10.1103/PhysRevC.92.064304
dc.rights.none.fl_str_mv (c) American Physical Society, 2015
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Physical Society, 2015
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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