Cieplicka-Oryńczak, Natalia ; Michelagnoli, Caterina ; Gargano, Angela ; Fornal, Bogdan ; Leoni, Silvia ; Benzoni, Giovanna ; Blanc, Aurélien ; Bottoni, Simone ; Crespi, Fabio Celso Luigi ; Iskra, Łukasz ; Jentschel, Michael ; Köster, Ulli ; Mutti, Paolo ; Pietralla, Norbert ; Ruiz-Martinez, Emilio ; Werner, Volker (2022)
Contrasting properties of particle-particle and hole-hole excitations in ²⁰⁶Tl and ²¹⁰Bi nuclei.
In: Physics Letters B, 2020, 802
doi: 10.26083/tuprints-00012679
Artikel, Zweitveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
A complete-spectroscopy investigation of low-lying, low-spin states in the one-proton-hole and one-neutron-hole nucleus 206Tl has been performed by using thermal neutron capture and γ-coincidence technique with the FIPPS Ge array at ILL Grenoble. The new experimental results, together with data for the one-proton-particle and one-neutron-particle nucleus 210Bi (taken from a previous study done at ILL in the EXILL campaign), allowed for an extensive comparison with predictions of shell-model calculations performed with realistic interactions. No phenomenological adjustments were introduced in the calculations. In 210Bi, state energies, transition multipolarities and decay branchings agree well with theory for the three well separated multiplets of states which dominate the low-lying excitations. On the contrary, in 206Tl significant discrepancies are observed: in the same energy region, six multiplets were identified, with a significant mixing among them being predicted, as a consequence of the smaller energy separation between the active orbitals. The discrepancies in 206Tl are attributed to the larger uncertainties in the determination of the off-diagonal matrix elements of the realistic shell-model interaction with respect to the calculated diagonal matrix elements, the only ones playing a major role in the case of 210Bi. The work points to the need of more advanced approaches in the construction of the realistic interactions.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Cieplicka-Oryńczak, Natalia ; Michelagnoli, Caterina ; Gargano, Angela ; Fornal, Bogdan ; Leoni, Silvia ; Benzoni, Giovanna ; Blanc, Aurélien ; Bottoni, Simone ; Crespi, Fabio Celso Luigi ; Iskra, Łukasz ; Jentschel, Michael ; Köster, Ulli ; Mutti, Paolo ; Pietralla, Norbert ; Ruiz-Martinez, Emilio ; Werner, Volker |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Contrasting properties of particle-particle and hole-hole excitations in ²⁰⁶Tl and ²¹⁰Bi nuclei |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Publikationsdatum der Erstveröffentlichung: | 2020 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physics Letters B |
| Jahrgang/Volume einer Zeitschrift: | 802 |
| Kollation: | 5 Seiten |
| DOI: | 10.26083/tuprints-00012679 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/12679 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung |
| Kurzbeschreibung (Abstract): | A complete-spectroscopy investigation of low-lying, low-spin states in the one-proton-hole and one-neutron-hole nucleus 206Tl has been performed by using thermal neutron capture and γ-coincidence technique with the FIPPS Ge array at ILL Grenoble. The new experimental results, together with data for the one-proton-particle and one-neutron-particle nucleus 210Bi (taken from a previous study done at ILL in the EXILL campaign), allowed for an extensive comparison with predictions of shell-model calculations performed with realistic interactions. No phenomenological adjustments were introduced in the calculations. In 210Bi, state energies, transition multipolarities and decay branchings agree well with theory for the three well separated multiplets of states which dominate the low-lying excitations. On the contrary, in 206Tl significant discrepancies are observed: in the same energy region, six multiplets were identified, with a significant mixing among them being predicted, as a consequence of the smaller energy separation between the active orbitals. The discrepancies in 206Tl are attributed to the larger uncertainties in the determination of the off-diagonal matrix elements of the realistic shell-model interaction with respect to the calculated diagonal matrix elements, the only ones playing a major role in the case of 210Bi. The work points to the need of more advanced approaches in the construction of the realistic interactions. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-126796 |
| Zusätzliche Informationen: | Keywords: Nuclear structure 206Tl; 210Biγγ-coin. 206Tl; Branching ratios 206Tl; Deduced levels and Jπ206Tl; Comparison with shell-model calculations |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik 05 Fachbereich Physik > Institut für Kernphysik > Experimentelle Kernphysik 05 Fachbereich Physik > Institut für Kernphysik > Experimentelle Kernphysik > Experimentelle Kernstrukturphysik mit exotischen Ionenstrahlen |
| Hinterlegungsdatum: | 09 Mär 2022 13:32 |
| Letzte Änderung: | 10 Mär 2022 08:28 |
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