N=32 shell closure below calcium: Low-lying structure of 50Ar

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

doi:10.1103/PhysRevC.102.064320

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N=32 shell closure below calcium: Low-lying structure of ⁵⁰Ar

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Schwenk, A.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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https://journals.aps.org/prc/pdf/10.1103/PhysRevC.102.064320
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Zitation

Cortés, M. L., Rodriguez, W., Doornenbal, P., Obertelli, A., Holt, J. D., Menéndez, J., et al. (2020). N=32 shell closure below calcium: Low-lying structure of ⁵⁰Ar. Physical Review C, 102(6): 064320. doi:10.1103/PhysRevC.102.064320.

Zitierlink: https://hdl.handle.net/21.11116/0000-0007-AF8A-9

Zusammenfassung

Low-lying excited states in the N=32 isotope ⁵⁰Ar were investigated by in-beam γ-ray spectroscopy following proton- and neutron-knockout, multinucleon removal, and proton inelastic scattering at the RIKEN Radioactive Isotope Beam Factory. The energies of the two previously reported transitions have been confirmed, and five additional states are presented for the first time, including a candidate for a 3^- state. The level scheme built using γγ coincidences was compared to shell-model calculations in the sd−pf model space and to ab initio predictions based on chiral two- and three-nucleon interactions. Theoretical proton- and neutron-knockout cross sections suggest that two of the new transitions correspond to 2⁺ states, while the previously proposed 4⁺₁ state could also correspond to a 2⁺ state.