Phys.Rev. C 104, 044331 (2021)

B.D.Linh, A.Corsi, A.Gillibert, A.Obertelli, P.Doornenbal, C.Barbieri, S.Chen, L.X.Chung, T.Duguet, M.Gomez-Ramos, J.D.Holt, A.Moro, P.Navratil, K.Ogata, N.T.T.Phuc, N.Shimizu, V.Soma, Y.Utsuno, N.L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, N.Chiga, M.L.Cortes, 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.Gasparic, 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.Soderstrom, S.Takeuchi, N.D.Ton, H.Tornqvist, V.Vaquero, V.Wagner, H.Wang, V.Werner, X.Xu, Y.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

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

NUCLEAR REACTIONS ¹H(⁵⁰Ar, 2p)⁴⁹Cl, (⁵⁰Ar, 2n2p)⁴⁷Cl; ¹H(⁵²K, n3p)⁴⁹Cl; ¹H(⁴⁸Cl, np)⁴⁷Cl, [secondary ion beams from ⁹Be(⁷⁰Zn, X), E=345 MeV/nucleon primary reaction at RIBF-RIKEN facility, followed by separation of ions by BigRIPS separator using Bπ-ΔE-TOF measurement and MINOS hydrogen target system]; measured reaction products, A/Q versus Z plot, scattered ions of ⁴⁷Cl and ⁴⁹Cl using the SAMURAI spectrometer and identified by A/Q and Z, Eγ, Iγ, γγ-coin using DALI2+ array of 226 NaI(Tl) detectors. ^47,49Cl; deduced levels, J and π for ⁴⁹Cl, parallel and transverse momentum distributions and L-transfers for ⁴⁹Cl, inclusive cross sections. Comparison of experimental level structure with shell-model calculations using SDPF-MU interactions, and IMSRG calculation. Comparison of momentum distributions with distorted-wave impulse approximation (DWIA), and transfer to continuum (TC) methods. Comparison of inclusive cross sections with LISE++ theoretical calculations. ⁴⁹Cl; calculated levels, J, π, T_1/2 of levels, B(E2), B(M1) using SDFP-MU shell-model. ^45,47,49Cl; calculated levels, J, π, spectroscopic factors using shell-model and ab initio approaches. ^41,43,45,47Cl; spin inversion issue not settled. Comparison of experimental and theoretical (from CGF) energy difference between the first 1/2+ and 3/2+ states in ^{35,36,37,38,39,40,41,43,45,47,49,51,53}Cl, ^{37,38,39,40,41,43,45,47,49,51,53,55}K.

doi: 10.1103/PhysRevC.104.044331