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Contrasting properties of particle-particle and hole-hole excitations in ²⁰⁶Tl and ²¹⁰Bi nuclei

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
Article, Secondary publication, Publisher's Version

Copyright Information: CC BY 4.0 International - Creative Commons, Attribution.

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Item Type: Article
Type of entry: Secondary publication
Title: Contrasting properties of particle-particle and hole-hole excitations in ²⁰⁶Tl and ²¹⁰Bi nuclei
Language: English
Date: 2022
Place of Publication: Darmstadt
Year of primary publication: 2020
Publisher: Elsevier
Journal or Publication Title: Physics Letters B
Volume of the journal: 802
Collation: 5 Seiten
DOI: 10.26083/tuprints-00012679
Corresponding Links:
Origin: Secondary publication

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: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-126796
Additional Information:

Keywords: Nuclear structure 206Tl; 210Biγγ-coin. 206Tl; Branching ratios 206Tl; Deduced levels and Jπ206Tl; Comparison with shell-model calculations

Classification DDC: 500 Science and mathematics > 530 Physics
Divisions: 05 Department of Physics > Institute of Nuclear Physics
05 Department of Physics > Institute of Nuclear Physics > Experimentelle Kernphysik > Experimental Nuclear Structure Physics with Exotic Ion Beams
Date Deposited: 09 Mar 2022 13:32
Last Modified: 22 Feb 2023 07:22
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/12679
PPN: 50518978X
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