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arXiv · 2110.03284

Investigation of the ground-state spin inversion in the neutron-rich 47,49Cl isotopes

B. D. Linh·A. Corsi·A. Gillibert·A. Obertelli·P. Doornenbal·C. Barbieri·S. Chen·L. X. Chung·T. Duguet·M. Gómez-Ramos·J. D. Holt·A. Moro·P. Navrátil·K. Ogata·N. T. T. Phuc·N. Shimizu·V. Somà·Y. Utsuno·N. L. Achouri·H. Baba·F. Browne·D. Calvet·F. Château·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·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·N. D. Ton·H. Törnqvist·V. Vaquero·V. Wagner·H. Wang·V. Werner·X. Xu·Y. Yamada·D. Yan·Z. Yang·M. Yasuda·L. Zanetti
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Abstract

A first gamma-ray study of 47,49Cl spectroscopy was performed at the Radioactive Isotope Beam Factory with 50Ar projectiles at 217 MeV/nucleon, impinging on the liquid hydrogen target of the MINOS device. Prompt de-excitation gamma-rays were measured with the NaI(Tl) array DALI2+. Through the one-proton knockout reaction 50Ar(p,2p), a spin assignment could be determined for the low-lying states of 49Cl from the momentum distribution obtained with the SAMURAI spectrometer. A spin-parity J = 3/2+ is deduced for the ground state of 49Cl, similar to the recently studied N = 32 isotope 51K.

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B. D. Linh, A. Corsi, A. Gillibert, A. Obertelli, P. Doornenbal, C. Barbieri, S. Chen, L. X. Chung, T. Duguet, M. Gómez-Ramos, J. D. Holt, A. Moro, P. Navrátil, K. Ogata, N. T. T. Phuc, N. Shimizu, V. Somà, Y. Utsuno, N. L. Achouri, H. Baba, F. Browne, D. Calvet, F. Château, 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, 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, N. D. Ton, H. Törnqvist, V. Vaquero, V. Wagner, H. Wang, V. Werner, X. Xu, Y. Yamada, D. Yan, Z. Yang, M. Yasuda, L. Zanetti. 2021-10-07. Investigation of the ground-state spin inversion in the neutron-rich 47,49Cl isotopes. https://doi.org/10.1103/physrevc.104.044331

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