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Penning-trap mass spectrometry and mean-field study of nuclear shape coexistence in the neutron-deficient lead region

We present a study of nuclear shape coexistence in the region of neutron-deficient lead isotopes. The midshell gold isotopes Au180,185,188,190 (Z=79), the two long-lived nuclear states in At197 (Z=85), and the neutron-rich nuclide At219 were produced by the ISOLDE facility at CERN and their masses w...

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Detalles Bibliográficos
Autores principales: Manea, V, Ascher, P, Atanasov, D, Barzakh, A E, Beck, D, Blaum, K, Borgmann, Ch, Breitenfeldt, M, Cakirli, R B, Cocolios, T E, Day Goodacre, T, Fedorov, D V, Fedosseev, V N, George, S, Herfurth, F, Kowalska, M, Kreim, S, Litvinov, Yu A, Lunney, D, Marsh, B, Neidherr, D, Rosenbusch, M, Rossel, R E, Rothe, S, Schweikhard, L, Wienholtz, F, Wolf, R N, Zuber, K
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevC.95.054322
http://cds.cern.ch/record/2270106
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author Manea, V
Ascher, P
Atanasov, D
Barzakh, A E
Beck, D
Blaum, K
Borgmann, Ch
Breitenfeldt, M
Cakirli, R B
Cocolios, T E
Day Goodacre, T
Fedorov, D V
Fedosseev, V N
George, S
Herfurth, F
Kowalska, M
Kreim, S
Litvinov, Yu A
Lunney, D
Marsh, B
Neidherr, D
Rosenbusch, M
Rossel, R E
Rothe, S
Schweikhard, L
Wienholtz, F
Wolf, R N
Zuber, K
author_facet Manea, V
Ascher, P
Atanasov, D
Barzakh, A E
Beck, D
Blaum, K
Borgmann, Ch
Breitenfeldt, M
Cakirli, R B
Cocolios, T E
Day Goodacre, T
Fedorov, D V
Fedosseev, V N
George, S
Herfurth, F
Kowalska, M
Kreim, S
Litvinov, Yu A
Lunney, D
Marsh, B
Neidherr, D
Rosenbusch, M
Rossel, R E
Rothe, S
Schweikhard, L
Wienholtz, F
Wolf, R N
Zuber, K
author_sort Manea, V
collection CERN
description We present a study of nuclear shape coexistence in the region of neutron-deficient lead isotopes. The midshell gold isotopes Au180,185,188,190 (Z=79), the two long-lived nuclear states in At197 (Z=85), and the neutron-rich nuclide At219 were produced by the ISOLDE facility at CERN and their masses were determined with the high-precision Penning-trap mass spectrometer ISOLTRAP. The studied gold isotopes address the trend of binding energies in a region of the nuclear chart where the nuclear charge radii show pronounced discontinuities. Significant deviations from the atomic-mass evaluation were found for Au188,190. The new trend of two-neutron separation energies is smoother, although it does reveal the onset of deformation. The origin of this effect is interpreted in connection to the odd-even staggering of binding energies, as well as theoretically by Hartree-Fock-Bogoliubov calculations including quasiparticle blocking. The role of blocking for reproducing the large odd-even staggering of charge radii in the mercury isotopic chain is illustrated.
id oai-inspirehep.net-1601699
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2017
record_format invenio
spelling oai-inspirehep.net-16016992020-05-15T15:32:17Zdoi:10.1103/PhysRevC.95.054322http://cds.cern.ch/record/2270106engManea, VAscher, PAtanasov, DBarzakh, A EBeck, DBlaum, KBorgmann, ChBreitenfeldt, MCakirli, R BCocolios, T EDay Goodacre, TFedorov, D VFedosseev, V NGeorge, SHerfurth, FKowalska, MKreim, SLitvinov, Yu ALunney, DMarsh, BNeidherr, DRosenbusch, MRossel, R ERothe, SSchweikhard, LWienholtz, FWolf, R NZuber, KPenning-trap mass spectrometry and mean-field study of nuclear shape coexistence in the neutron-deficient lead regionNuclear Physics - ExperimentWe present a study of nuclear shape coexistence in the region of neutron-deficient lead isotopes. The midshell gold isotopes Au180,185,188,190 (Z=79), the two long-lived nuclear states in At197 (Z=85), and the neutron-rich nuclide At219 were produced by the ISOLDE facility at CERN and their masses were determined with the high-precision Penning-trap mass spectrometer ISOLTRAP. The studied gold isotopes address the trend of binding energies in a region of the nuclear chart where the nuclear charge radii show pronounced discontinuities. Significant deviations from the atomic-mass evaluation were found for Au188,190. The new trend of two-neutron separation energies is smoother, although it does reveal the onset of deformation. The origin of this effect is interpreted in connection to the odd-even staggering of binding energies, as well as theoretically by Hartree-Fock-Bogoliubov calculations including quasiparticle blocking. The role of blocking for reproducing the large odd-even staggering of charge radii in the mercury isotopic chain is illustrated.oai:inspirehep.net:16016992017
spellingShingle Nuclear Physics - Experiment
Manea, V
Ascher, P
Atanasov, D
Barzakh, A E
Beck, D
Blaum, K
Borgmann, Ch
Breitenfeldt, M
Cakirli, R B
Cocolios, T E
Day Goodacre, T
Fedorov, D V
Fedosseev, V N
George, S
Herfurth, F
Kowalska, M
Kreim, S
Litvinov, Yu A
Lunney, D
Marsh, B
Neidherr, D
Rosenbusch, M
Rossel, R E
Rothe, S
Schweikhard, L
Wienholtz, F
Wolf, R N
Zuber, K
Penning-trap mass spectrometry and mean-field study of nuclear shape coexistence in the neutron-deficient lead region
title Penning-trap mass spectrometry and mean-field study of nuclear shape coexistence in the neutron-deficient lead region
title_full Penning-trap mass spectrometry and mean-field study of nuclear shape coexistence in the neutron-deficient lead region
title_fullStr Penning-trap mass spectrometry and mean-field study of nuclear shape coexistence in the neutron-deficient lead region
title_full_unstemmed Penning-trap mass spectrometry and mean-field study of nuclear shape coexistence in the neutron-deficient lead region
title_short Penning-trap mass spectrometry and mean-field study of nuclear shape coexistence in the neutron-deficient lead region
title_sort penning-trap mass spectrometry and mean-field study of nuclear shape coexistence in the neutron-deficient lead region
topic Nuclear Physics - Experiment
url https://dx.doi.org/10.1103/PhysRevC.95.054322
http://cds.cern.ch/record/2270106
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