Onset of collectivity for argon isotopes close to N=32

Year: 2024

Type: article

Abstract: The shell closure at $N=32$ has been investigated by a first spectroscopy of the $N=31$ nucleus $^{49}\mathrm{Ar}$ at the Radioactive Isotope Beam Factory. Using the $^{50}\mathrm{Ar}(p,pn)$ reaction channel in inverse kinematics, $^{50}\mathrm{Ar}$ projectiles at 217 MeV/nucleon impinged on a 150 mm long liquid hydrogen target, part of the MINOS device. Prompt deexcitation $\ensuremath{\gamma}$ rays were measured with the NaI(Tl) array ${\mathrm{DALI}2}^{+}$. Reaction products were analyzed with the SAMURAI spectrometer, which allowed the measurement of the momentum distributions and angular momentum transfer. Data were compared to state-of-the-art theoretical predictions, including shell-model, energy-density functional, and ab initio calculations. An onset of collectivity is suggested besides the spherical configuration typical of a closed shell nucleus, such as for $^{52}\mathrm{Ca}$.

Source: Physical Review C

DOI: 10.1103/physrevc.109.034312

Authors: B. D. Linh, A. Corsi, A. Gillibert, A. Obertelli, P. Doornenbal, C. Barbieri, T. Duguet, M. Gómez-Ramos, J. D. Holt, B. S. Hu, T. Miyagi, A. M. Moro, P. Navrátil, K. Ogata, S. Péru, N. T. T. Phuc, N. Shimizu, V. Somà, Y. Utsuno, N. L. Achouri, H. Baba, F. Browne, D. Calvet, F. Château, S. Chen, N. Chiga, M. L. Cortés, A. Delbart, J.-M. Gheller, A. Giganon, C. Hilaire, T. Isobe, T. Kobayashi, Y. Kubota, V. Lapoux, H. N. Liu, T. Motobayashi, I. Murray, H. Otsu, V. Panin, N. Paul, W. Rodriguez, H. Sakurai, M. Sasano, D. Steppenbeck, L. Stuhl, Y. L. Sun, Y. Togano, T. Uesaka, K. Wimmer, K. Yoneda, O. Aktas, T. Aumann, L. X. Chung, F. Flavigny, S. Franchoo, I. Gašparić, R. B. Gerst, J. Gibelin, K. I. Hahn, N. T. Khai, D. Kim, T. Koiwai, Y. Kondo, P. Koseoglou, J. Lee, C. Lehr, T. Lokotko, M. MacCormick, K. Moschner, T. Nakamura, S. Y. Park, D. Rossi, E. Sahin, D. Sohler, P.-A. Söderström, S. Takeuchi, H. Törnqvist, V. Vaquero, V. Wagner, S. T. Wang, V. Werner, X. Xu, Y. Yamada, D. Yan, Z. Yang, M. Yasuda, L. Zanetti

Institutions: Institute for Nuclear Science and Technology, Vietnam Atomic Energy Instiute, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris-Saclay, Institut de Recherche sur les Lois Fondamentales de l'Univers, Technische Universität Darmstadt, RIKEN, RIKEN Nishina Center, University of Milan, Istituto Nazionale di Fisica Nucleare, Sezione di Milano, KU Leuven, Universidad de Sevilla, TRIUMF, McGill University, GSI Helmholtz Centre for Heavy Ion Research, Max Planck Institute for Nuclear Physics, ExtreMe Matter Institute EMMI, Kyushu University, The University of Osaka, CEA Paris-Saclay - Etablissement de Saclay, CEA DAM Île-de-France, Vietnam National University Ho Chi Minh City, Ho Chi Minh City University of Science, University of Tsukuba, The University of Tokyo, Japan Atomic Energy Agency, Centre National de la Recherche Scientifique, École Nationale Supérieure d'Ingénieurs de Caen, Normandie Université, Laboratoire de Physique Corpusculaire de Caen, Institut National de Physique Nucléaire et de Physique des Particules, Université de Caen Normandie, Peking University, State Key Laboratory of Nuclear Physics and Technology, University of Hong Kong, Tohoku University, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, Collège de France, Université Paris Sciences et Lettres, Laboratoire Kastler Brossel, École Normale Supérieure - PSL, Sorbonne Université, Pontificia Universidad Javeriana, Universidad Nacional de Colombia, HUN-REN Institute for Nuclear Research, Institute for Basic Science, Rikkyo University, KTH Royal Institute of Technology, Ruđer Bošković Institute, University of Cologne, Ewha Womans University, Tokyo Institute of Technology, University of Oslo, Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering, Extreme Light Infrastructure - Nuclear Physics, Consejo Superior de Investigaciones Científicas, Instituto de Estructura de la Materia, Chinese Academy of Sciences, Institute of Modern Physics

Language: Latvian

Topic: Nuclear physics research studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Awards: G1049058752, G1259507762, G1525616127, G1541806023, G1736745720, G1771230537, G19405907, G1977012631, G203625172, G2073976794, G2076157637, G2240879383, G229825186, G2397586631, G279363373, The DiRAC 2.5x Facility, G3679833121, G3680780005, G3718830055, Dineutron in unstable nuclei probed by spin correlations, G3775504922, G3847725883, G4022262583, NUCLEAR COMPUTATIONAL LOW ENERGY INITIATIVE (NUCLEI), Microscopic description of fundamental nucleosynthesis processes by large-scale shell-model calculations, Ab initio theory of light and medium mass nuclei, Ab initio theory for major questions in subatomic physics, Nuclear Structure and Reactions: Equipment for Theory and Experiment, G5147240291, Unveiling in-nucleus proton-neutron pair using knockout reactions, G5478458683, G5672664344, G5997058474, G6037856047, Verbundprojekt 05P2018 (ErUM-FSP T07) - Aufbau von NUSTAR bei FAIR: Aufbau und Betrieb von Experimentiereinrichtungen zu Kernstrukturuntersuchungen, G6420755151, G6437323226, G6537386148, Study of short range correlation of a high-momentum nucleon pair using nuclear reactions with unstable nuclei, G6800588795, G6833936308, G6955735330, G7108246583, G7200830234, G7447190122, DiRAC2: 100 Tflop/s HPC cluster procurement, G7573294876, G7615445472, G7629755209, G7702914472, G774185828, SFB 1245: Atomkerne: Von fundamentalen Wechselwirkungen zu Struktur und Sternen, G7886093563, G7907570806, G7937591081, G8150249736, Determination of neutron capture reaction rate with new method for nucleosynthesis at neutron star merger, G8695159654, G878803593, G8954158648, DiRAC 2.5 Operations 2017-2020, Verbundprojekt 05P2021 (ErUM-FSP T07) - Aufbau von NUSTAR bei FAIR: Aufbau und Nutzung der NUSTAR-Anlage außerhalb der NUSTAR-High-Energy-Cave

OpenAlex ID: W4392952182