Spectroscopy of 2565,67Mn: Strong coupling in the N = 40 “island of inversion”

• DOI: 10.1016/j.physletb.2018.06.067
• Publication Date: 2018-07-03T18:31:16Z
• Authors: X.Y. Liu; Z. Liu; B. Ding; P. Doornenbal; A. Obertelli; S.M. Lenzi; P.M. Walker; L.X. Chung; B.D. Linh; G. Authelet; H. Baba; D. Calvet; F. Château; A. Corsi; A. Delbart; J.-M. Gheller; A. Gillibert; T. Isobe; V. Lapoux; M. Matsushita; S. Momiyama; T. Motobayashi; M. Niikura; F. Nowacki; H. Otsu; C. Péron; A. Peyaud; E.C. Pollacco; J.-Y. Roussé; H. Sakurai; M. Sasano; Y. Shiga; S. Takeuchi; R. Taniuchi; T. Uesaka; H. Wang; K. Yoneda; Y.H. Lam; T.H. Huang; M.D. Sun; W.Q. Zhang; H.Y. Lu; D.S. Hou; F. Browne; Zs. Dombradi; S. Franchoo; F. Giacoppo; A. Gottardo; K. Hadynska-Klek; Z. Korkulu; S. Koyama; Y. Kubota; J. Lee; M. Lettmann; R. Lozeva; K. Matsui; T. Miyazaki; S. Nishimura; C. Louchart; L. Olivier; S. Ota; Z. Patel; E. Sahin; C. Santamaria; C. Shand; P.-A. Söderström; G.L. Stefan; D. Steppenbeck; T. Sumikama; D. Suzuki; Zs. Vajta; V. Werner; J. Wu; Z. Xu; X.H. Zhou; Y.H. Zhang; H.S. Xu; F.S. Zhang
• Keywords: Physics; QC1-999; 0103 physical sciences; 530; 01 natural sciences; 333

Excited states in 63,65,67Mn were studied via in-beam γ-ray spectroscopy following knockout reactions from 68Fe. Similar level schemes, consisting of the 11/2−, 9/2−, 7/2− and 5/2g.s.− sequence, connected by I→I−1 transitions, established, first time for 65,67Mn. Their structures show features consistent with strongly-coupled rotational bands K=5/2. State-of-the-art shell-model calculations modified LNPS effective interaction reproduce observed levels remarkably well suggest dominance 4-particle-4-hole neutron configurations all states. The data on low-lying excited odd-mass 53−67Mn provide a textbook example nuclear structure evolution weak coupling through decoupling to strong along single isotopic chain n-rich side β stability line. These results help deepen our understanding N=40 "island inversion".