Investigation of the ground-state spin inversion in the neutron-rich $^{47,49}$Cl isotopes
- Linh, B.D.
- Corsi, A.
- Gillibert, A.
- Obertelli, A.
- Doornenbal, P.
- Barbieri, C.
- Chen, S.
- Chung, L.X.
- Duguet, T.
- Gómez-Ramos, M.
- Holt, J.D.
- Moro, A.
- Navrátil, P.
- Ogata, K.
- Phuc, N.T.T.
- Shimizu, N.
- Somà, V.
- Utsuno, Y.
- Achouri, N.L.
- Baba, H.
- Browne, F.
- Calvet, D.
- Château, F.
- Chiga, N.
- Cortés, M.L.
- Delbart, A.
- Gheller, J.-M.
- Giganon, A.
- Hilaire, C.
- Isobe, T.
- Kobayashi, T.
- Kubota, Y.
- Lapoux, V.
- Liu, H.N.
- Motobayashi, T.
- Murray, I.
- Otsu, H.
- Panin, V.
- Paul, N.
- Rodriguez, W.
- Sakurai, H.
- Sasano, M.
- Steppenbeck, D.
- Stuhl, L.
- Sun, Y.L.
- Togano, Y.
- Uesaka, T.
- Wimmer, K.
- Yoneda, K.
- Aktas, O.
- Aumann, T.
- Flavigny, F.
- Franchoo, S.
- Gašparić, I.
- Gerst, R.-B.
- Gibelin, J.
- Hahn, K.I.
- Khai, N.T.
- Kim, D.
- Koiwai, T.
- Kondo, Y.
- Koseoglou, P.
- Lee, J.
- Lehr, C.
- Lokotko, T.
- Maccormick, M.
- Moschner, K.
- Nakamura, T.
- Park, S.Y.
- Rossi, D.
- Sahin, E.
- Sohler, D.
- Söderström, P.-A.
- Takeuchi, S.
- Ton, N.D.
- Törnqvist, H.
- Vaquero, V.
- Wagner, V.
- Wang, H.
- Werner, V.
- Xu, X.
- Yamada, Y.
- Yan, D.
- Yang, Z.
- Yasuda, M.
- Zanetti, L.
Publication date
January 2021
DOI Publisher
American Physical Society (APS)Abstract
International audienceA first γ-ray study of Cl47,49 spectroscopy was performed at the Radioactive Isotope Beam Factory with Ar50 projectiles at 217 MeV/nucleon, impinging on the liquid hydrogen target of the MINOS device. Prompt deexcitation γ rays were measured with the NaI(Tl) array DALI2+. Through the one-proton knockout reaction Ar50(p,2p), a spin assignment could be determined for the low-lying states of Cl49 from the momentum distribution obtained with the SAMURAI spectrometer. A spin-parity Jπ=3/2+ is deduced for the ground state of Cl49, similar to the recently studied N=32 isotope K51. The evolution of the energy difference E(1/21+)−E(3/21+) is compared to state-of-the-art theoretical predictions
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