Approaching 100Sn: Structural evolution in 98,100Cd via lifetime measurements

The lifetimes of low-lying excited states below the 8 + seniority isomer were directly measured using fast timing detectors in the neutron-deficient isotopes 98,100 Cd. This experiment was conducted with the DEcay SPECtroscopy (DESPEC) setup at GSI, where the ions of interest were produced via a fragmentation reaction and identified using the FRagment Separator (FRS) before being implanted in the AIDA active stopper system, and the γ rays emitted during the de-excitation of isomeric states were detected by the LaBr 3 FATIMA Array. The newly deduced values for the reduced transition probabilities were compared with shell-model calculations using different interactions and effective charges. The results indicate that, while 98 Cd aligns well with a seniority scheme description, in 100 Cd the transition strengths among low-lying states are not fully reproduced, and the nature of these states remains an open problem within the present theoretical description. Ultimately, a key element in the description of this region, crucial for nuclear physics and astrophysics, appears to be the proton-neutron term of the nuclear effective interaction.

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Publication Details

Journal
Physics Letters B
Published
2025-03-07
DOI
https://doi.org/10.1016/j.physletb.2025.139378
Citations
2
Primary Topic
Nuclear physics research studies
Type
article
Field-Weighted Citation Impact
3.74

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Approaching 100Sn: Structural evolution in 98,100Cd via lifetime measurements

P. Koseoglou, Hong‐Bo Sun, A. Corsi, A. Gargano et al.
2 citations
Physics Letters B
Nuclear physics research studies
3.74
article

Approaching 100Sn: Structural evolution in 98,100Cd via lifetime measurements

P. Koseoglou, Hong‐Bo Sun, A. Corsi, A. Gargano, M. Mikołajczuk, Z. Liu, K. Rezynkina, A. Ertoprak, P. Reiter, S. Piétri, A. Yaneva, S. M. Lenzi, L. J. Harkness-Brennan, Jürgen Gerl, S. Pigliapoco, A. Algora, T. J. Mertzimekis, E. Kazantseva, B. Alayed, H. J. Wollersheim, M. Rüdigier, A. Goasduff, V. Karayonchev, Polytimos Vasileiou, R. Menegazzo, M. Siciliano, J. Benito, M. L. Cortés, M. Armstrong, J.-M. Régis, R. Zidarova, E. Haettner, F. Nowacki, M. Satrazani, K. Ide, F. Galtarossa, A. Esmaylzadeh, A. Raggio, Gregor Kosir, K. Wimmer, W. Korten, T. Kurtukian‐Nieto, F. C. L. Crespi, J.J. Valiente-Dobón, P. Papadakis, U. Ahmed, C. Scheidenberger, J. Vesić, A. Banerjee, O. Hall, M. Llanos Expósito, D. S. Judson, G.G. Kiss, H. Schaffner, J. Ha, F. Amjad, Muneerah Al-Aqeel, H. Weick, A. Gozzelino, A. Korgul, B. Cederwall, Ashish Sharma, Marta Mazzocco, M. Cicerchia, I. Kojouharov, S. E. A. Orrigo, G.L. Zhang, A. Blazhev, H. Rösch, Michael P. Balogh, Timothy M. Davidson, Jingbin Lu, L. M. Fraile, V. Werner, B. Rubio, D. M. Cox, L. Knafla, A. Mistry, D. Bazzacco, M.M.R. Chishti, G. Pasqualato, H. Watanabe, R. Lozeva, D. Brugnara, F. Soramel, F. Camera, N. Hubbard, B. Quintana Arnés, P. H. Regan, O. Wieland, B. Das, E.R. Gamba, C. Porzio, T. Grahn, S. Leoni, C. Hornung, T. Arıcı, Y. Hrabar, Nándor Szegedi, L. P. Gaffney, C. Appleton, I. Zanon, A. Zyriliou, J. Smallcombe, H. M. Albers, Y. Tanaka, S. Bottoni, M. Polettini, F. Recchia, J. Wiederhold, J. Jolie, M. Labiche, H. Heggen, G. Aggez, A. Illana, I. Kuti, G. Benzoni, B. Sun, J. Garbe, P. Ruotsalainen, J. Wu, G. Zhang, D. R. Napoli, A. Gottardo, J.R. Murias, D. Kostyleva, P.-A. Söderström, S. P. Hu, L. Waring, Stefanos Pelonis, I. Mukha, N. Pietralla, T. Dickel, S. Alhomaidhi, C. G. Bruno, D. Genna, R. D. Page, T. Marchi, C. M. Petrache, G. de Gregorio, B. Million, R. Knöbel, C. Jones, D. Mengoni, A. M. Bruce, J. Pellumaj, R. D. Kern, P. Boutachkov, Ö. Aktaş, L. G. Sarmiento, H.Q. Zhang, Kaikai Zheng, E. Nácher, S. Ziliani, G. de Angelis, A. Bracco, A. Astier, A. Sveiczer, Zhiyong Huang, M. Górska, J. Zhao, E. Şahin, L. H. Zhu, J. Petrović, A. Sood, G. Mantovani, P. J. Woods, D. Sohler, R. Vidal, P. Roy, P. R. John, J. Simpson, E. Rocco, N. Kurz, B. S. Nara Singh, Zs. Podolyák, D. T. Joss, S. Jazrawi, M. Doncel, Minna‐Liisa Luoma, Guanheng Li, L. Sexton, M. von Tresckow
article en
2 citations

Abstract

The lifetimes of low-lying excited states below the 8 + seniority isomer were directly measured using fast timing detectors in the neutron-deficient isotopes 98,100 Cd. This experiment was conducted with the DEcay SPECtroscopy (DESPEC) setup at GSI, where the ions of interest were produced via a fragmentation reaction and identified using the FRagment Separator (FRS) before being implanted in the AIDA active stopper system, and the γ rays emitted during the de-excitation of isomeric states were detected by the LaBr 3 FATIMA Array. The newly deduced values for the reduced transition probabilities were compared with shell-model calculations using different interactions and effective charges. The results indicate that, while 98 Cd aligns well with a seniority scheme description, in 100 Cd the transition strengths among low-lying states are not fully reproduced, and the nature of these states remains an open problem within the present theoretical description. Ultimately, a key element in the description of this region, crucial for nuclear physics and astrophysics, appears to be the proton-neutron term of the nuclear effective interaction.

Physics Letters BVol. 863
Universidad Complutense de Madrid (ES), King Abdulaziz City for Science and Technology (SA), Centre National de la Recherche Scientifique (FR), University of Padua (IT), University of Liverpool (GB), Tampere University of Applied Sciences (FI), Qassim University (SA), Universitat de València (ES), City University of Hong Kong (HK), GSI Helmholtz Centre for Heavy Ion Research (DE), University of Cologne (DE), Imam Mohammad ibn Saud Islamic University (SA), Institut d'Économie Industrielle (FR), The Royal Free Hospital (GB), Institut Pluridisciplinaire Hubert Curien (FR), Technische Universität Darmstadt (DE), Soochow University (CN), Instituto de Física Corpuscular (ES), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Napoli (IT), Max Planck Institute for Solar System Research (DE), Laboratoire de Physique des deux infinis Bordeaux (FR), University of Campania "Luigi Vanvitelli" (IT), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (FR), Istituto Nazionale di Fisica Nucleare, Sezione di Milano (IT), Grand Accélérateur National d'Ions Lourds (FR), University College London (GB), Université de Strasbourg (FR), University of Pennsylvania (US), KTH Royal Institute of Technology (SE)
U.S. Department of Energy, National Natural Science Foundation of China, Bundesministerium für Bildung und Forschung, Generalitat Valenciana, Vetenskapsrådet, Technische Universität Darmstadt, Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, Natural Science Foundation for Young Scientists of Shanxi Province, Office of Science, Science and Technology Facilities Council, Young Scientists Fund, Agencia Estatal de Investigación, Basic and Applied Basic Research Foundation of Guangdong Province, Nuclear Physics
Openalex Percentile: Top 9%
Nuclear physics research studies
3.74
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