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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...
Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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Lenguaje: | eng |
Publicado: |
2017
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1103/PhysRevC.95.054322 http://cds.cern.ch/record/2270106 |
_version_ | 1780954848162742272 |
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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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