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Quadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126
The first low-energy Coulomb-excitation measurement of the radioactive, semi-magic, two proton-hole nucleus 206Hg, was performed at CERN's recently-commissioned HIE-ISOLDE facility. Two γ rays depopulating low-lying states in 206Hg were observed. From the data, a reduced transition strength B(E...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2023
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2023.137675 http://cds.cern.ch/record/2848107 |
| _version_ | 1780976827619082240 |
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| author | Morrison, L Hadyńska-Klȩk, K Podolyák, Zs Gaffney, L P Zielińska, M Brown, B A Grawe, H Stevenson, P D Berry, T Boukhari, A Brunet, M Canavan, R Catherall, R Cederkäll, J Colosimo, S J Cubiss, J G De Witte, H Doherty, D T Fransen, Ch Georgiev, G Giannopoulos, E Górska, M Hess, H Kaya, L Kröll, T Lalović, N Marsh, B Martinez Palenzuela, Y O'Neill, G Pakarinen, J Ramos, J P Reiter, P Rodriguez, J A Rosiak, D Rothe, S Rudigier, M Siciliano, M Simpson, E C Snall, J Spagnoletti, P Thiel, S Warr, N Wenander, F Zidarova, R |
| author_facet | Morrison, L Hadyńska-Klȩk, K Podolyák, Zs Gaffney, L P Zielińska, M Brown, B A Grawe, H Stevenson, P D Berry, T Boukhari, A Brunet, M Canavan, R Catherall, R Cederkäll, J Colosimo, S J Cubiss, J G De Witte, H Doherty, D T Fransen, Ch Georgiev, G Giannopoulos, E Górska, M Hess, H Kaya, L Kröll, T Lalović, N Marsh, B Martinez Palenzuela, Y O'Neill, G Pakarinen, J Ramos, J P Reiter, P Rodriguez, J A Rosiak, D Rothe, S Rudigier, M Siciliano, M Simpson, E C Snall, J Spagnoletti, P Thiel, S Warr, N Wenander, F Zidarova, R |
| author_sort | Morrison, L |
| collection | CERN |
| description | The first low-energy Coulomb-excitation measurement of the radioactive, semi-magic, two proton-hole nucleus 206Hg, was performed at CERN's recently-commissioned HIE-ISOLDE facility. Two γ rays depopulating low-lying states in 206Hg were observed. From the data, a reduced transition strength B(E2;21+→01+)=4.4(6) W.u. was determined, the first such value for an N=126 nucleus south of 208Pb, which is found to be slightly lower than that predicted by shell-model calculations. In addition, a collective octupole state was identified at an excitation energy of 2705 keV, for which a reduced B(E3) transition probability of 30−13+10 W.u. was extracted. These results are crucial for understanding both quadrupole and octupole collectivity in the vicinity of the heaviest doubly-magic nucleus 208Pb, and for benchmarking a number of theoretical approaches in this key region. This is of particular importance given the paucity of data on transition strengths in this region, which could be used, in principle, to test calculations relevant to the astrophysical r-process. |
| id | cern-2848107 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2023 |
| record_format | invenio |
| spelling | cern-28481072023-02-02T20:27:39Zdoi:10.1016/j.physletb.2023.137675http://cds.cern.ch/record/2848107engMorrison, LHadyńska-Klȩk, KPodolyák, ZsGaffney, L PZielińska, MBrown, B AGrawe, HStevenson, P DBerry, TBoukhari, ABrunet, MCanavan, RCatherall, RCederkäll, JColosimo, S JCubiss, J GDe Witte, HDoherty, D TFransen, ChGeorgiev, GGiannopoulos, EGórska, MHess, HKaya, LKröll, TLalović, NMarsh, BMartinez Palenzuela, YO'Neill, GPakarinen, JRamos, J PReiter, PRodriguez, J ARosiak, DRothe, SRudigier, MSiciliano, MSimpson, E CSnall, JSpagnoletti, PThiel, SWarr, NWenander, FZidarova, RQuadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126Nuclear Physics - ExperimentThe first low-energy Coulomb-excitation measurement of the radioactive, semi-magic, two proton-hole nucleus 206Hg, was performed at CERN's recently-commissioned HIE-ISOLDE facility. Two γ rays depopulating low-lying states in 206Hg were observed. From the data, a reduced transition strength B(E2;21+→01+)=4.4(6) W.u. was determined, the first such value for an N=126 nucleus south of 208Pb, which is found to be slightly lower than that predicted by shell-model calculations. In addition, a collective octupole state was identified at an excitation energy of 2705 keV, for which a reduced B(E3) transition probability of 30−13+10 W.u. was extracted. These results are crucial for understanding both quadrupole and octupole collectivity in the vicinity of the heaviest doubly-magic nucleus 208Pb, and for benchmarking a number of theoretical approaches in this key region. This is of particular importance given the paucity of data on transition strengths in this region, which could be used, in principle, to test calculations relevant to the astrophysical r-process.oai:cds.cern.ch:28481072023 |
| spellingShingle | Nuclear Physics - Experiment Morrison, L Hadyńska-Klȩk, K Podolyák, Zs Gaffney, L P Zielińska, M Brown, B A Grawe, H Stevenson, P D Berry, T Boukhari, A Brunet, M Canavan, R Catherall, R Cederkäll, J Colosimo, S J Cubiss, J G De Witte, H Doherty, D T Fransen, Ch Georgiev, G Giannopoulos, E Górska, M Hess, H Kaya, L Kröll, T Lalović, N Marsh, B Martinez Palenzuela, Y O'Neill, G Pakarinen, J Ramos, J P Reiter, P Rodriguez, J A Rosiak, D Rothe, S Rudigier, M Siciliano, M Simpson, E C Snall, J Spagnoletti, P Thiel, S Warr, N Wenander, F Zidarova, R Quadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126 |
| title | Quadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126 |
| title_full | Quadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126 |
| title_fullStr | Quadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126 |
| title_full_unstemmed | Quadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126 |
| title_short | Quadrupole and octupole collectivity in the semi-magic nucleus 80206Hg126 |
| title_sort | quadrupole and octupole collectivity in the semi-magic nucleus 80206hg126 |
| topic | Nuclear Physics - Experiment |
| url | https://dx.doi.org/10.1016/j.physletb.2023.137675 http://cds.cern.ch/record/2848107 |
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