| Title: |
Electromagnetic moments of 215,217Bi: Probing shell evolution beyond N=126 |
| Authors: |
Andreyev, A. N.; Barzakh, A.; Seliverstov, M. D.; Yue, Z.; Liu, Menglan; Yuan, Cenxi; Algora, A.; Andel, B.; Antalic, S.; Al Monthery, M.; Atanasov, D.; Marín Benito, Jesús María; Benzoni, G.; Berry, T.; Bissell, M. L.; Blaum, K.; García Borge, María José; Chrysalidis, K.; Clisu, C.; Cocolios, T. E.; Costache, C.; Cubiss, J. G.; Day Goodacre, T.; Farooq-Smith, G. J.; Fedorov, D. V.; Fedosseev, V. N.; Fraile, L. M.; Fynbo, H. O.U.; Gadelshin, V.; Gaffney, L. P.; García Ruiz, R. F.; Granados, C.; Greenlees, P. T.; Harding, R. D.; Harkness-Brennan, L. J.; Heinke, R.; Herlert, A.; Huyse, M.; Illana, A.; Jolie, J.; Judson, D. S.; Karls, J.; Konki, J.; Larmonier, P.; Lazarus, I.; Leimbach, D.; Lică, R.; Liu, Z.; Lunney, D.; Lynch, K. M.; Madurga, M.; Manea, V.; Marginean, N.; Marginean, R.; Marsh, B. A.; Mihai, C.; Molkanov, P.; Mosat, P.; Mougeot, M.; Murias, J. R.; Nácher, Enrique; Negret, A.; Neidherr, D.; Nies, L.; Page, R. D.; Pascu, S.; Perea, Ángel; Pucknell, V.; Rahkila, P.; Raison, C.; Rapisarda, E.; Rezynkina, K.; Rosenbush, M.; Rossel, R. E.; Rothe, S.; Sánchez-Tembleque, V.; Schomacker, K.; Schweikhard, L.; Seiffert, C.; Sels, S.; Sotty, C.; Stan, L.; Stryjczyk, M.; Studer, D.; Sundberg, J.; Sürder, C.; Tengblad, Olof; Van Duppen, P.; Vedia, V.; Verlinde, M.; Viñals, S.; Warr, N.; Welker, A.; Wienholtz, F.; Wolf, R. N. |
| Contributors: |
National Natural Science Foundation of China; Chinese Academy of Sciences; Ministerio de Ciencia e Innovación (España); Institute of Atomic Physics (Romania); Universidad Complutense de Madrid; Federal Ministry of Education and Research (Germany); Generalitat Valenciana; Ministerio de Ciencia, Innovación y Universidades (España); Fonds de la Recherche Scientifique (Fédération Wallonie-Bruxelles); Research Foundation - Flanders; Belgian Science Policy Office; European Commission; Science and Technology Facilities Council (UK); Slovak Research and Development Agency; VEGA Agency (Slovakia); Max Planck Society; Andreyev, A. N.; Barzakh, A.; #NODATA#; Yue, Z.; Liu, Menglan; Yuan, Cenxi; Andel, B.; Antalic, S.; Al Monthery, M.; Blaum, K.; Cocolios, T. E.; Cubiss, J. G.; Day Goodacre, T.; Farooq-Smith, G. J.; Fedorov, D. V.; Fedosseev, V. N.; Herlert, A.; Rothe, S.; Simon Mark C.; Stryjczyk, M. |
| Publisher Information: |
Elsevier |
| Publication Year: |
2025 |
| Collection: |
Digital.CSIC (Consejo Superior de Investigaciones Científicas / Spanish National Research Council) |
| Subject Terms: |
Dipole magnetic moments; Hyperfine structure; Laser spectroscopy; Shell-model calculations; astronomy; Astrophysics |
| Description: |
9 pages, 8 figures, 1 table ; The nuclear properties of bismuth isotopes (𝑍 = 83), with just one valence proton above the closed spherical shell at 𝑍 = 82, are expected to be governed by a single unpaired proton. However, already in semimagic 209Bi (𝑍 =83, 𝑁 =126), the magnetic moment (𝜇) strongly deviates from the single-particle Schmidt value. A near linear decrease in 𝜇 with the increase of 𝑁 after the 𝑁 = 126 magic number was observed up to 𝑁 = 130. In order to test whether this trend is kept at 𝑁 > 130 and to reveal the underlying mechanisms, an investigation of 215,217Bi (𝑁 = 132,134) has been undertaken. The magnetic dipole and electric quadrupole moments of the 𝐼𝜋 = 9∕2− nuclear ground states in these isotopes have been measured for the first time using the in-source resonance-ionization spectroscopy technique at ISOLDE (CERN). It has been shown that the linearly decreasing trend of 𝜇(209,211,213Bi𝑔) is broken in 215,217Bi with a nearly constant value of 𝜇 observed. Experimental data have been compared to calculations in the framework of the configuration-interaction shell model with the monopolebased universal VMU+LS interaction. The peculiarities in the behavior of 𝜇(Bi, 9∕2−) with increasing neutron number are explained as being due to the shell evolution, change of the neutron orbitals occupancies and strong configuration mixing beyond 𝑁 = 130. Also, the difference in the 𝜇 trends for bismuth (𝑍 = 83) and astatine (𝑍 = 85) isotopes with 𝑁 > 126 are reproduced by the shell-model calculations. It is shown that monopole interaction plays noticeable role in the description of the peculiarities of the 𝜇 behaviour. Additionally, the extension of the application of the VMU interaction to the 𝜇 isotopic trends for heavy nuclei is important for further study of the capabilities of this promising version of the shell-model calculations. ; We thank the ISOLDE Collaboration for providing excellent beams. Shell model calculations have been supported by the National Natural Science Foundation of China under ... |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
#PLACEHOLDER_PARENT_METADATA_VALUE#; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-098868-B-I00/ES/CENTELLEADORES RAPIDOS PARA ESTRUCTURA NUCLEAR Y APLICACIONES/; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126998OB-I00/ES/ESTRUCTURA NUCLEAR Y APLICACIONES CON CENTELLEADORES RAPIDOS/; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-138297NB-C21/ES/ESTRUCTURA NUCLEAR, ASTROFISICA Y TRANSFERENCIA DE CONOCIMIENTO IFIC/; info:eu-repo/grantAgreement/AEI//CEX2023-001292-S; info:eu-repo/grantAgreement/EC/H2020/654002; https://doi.org/10.1016/j.physletb.2025.140013; Sí; Physics Letters B 871:140013 (2025); https://hdl.handle.net/10261/413448; https://api.elsevier.com/content/abstract/scopus_id/105022068809 |
| DOI: |
10.1016/j.physletb.2025.140013 |
| Availability: |
https://hdl.handle.net/10261/413448; https://doi.org/10.1016/j.physletb.2025.140013; https://api.elsevier.com/content/abstract/scopus_id/105022068809 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.A829D7C |
| Database: |
BASE |