학술논문
Spectroscopy of 2565,67Mn: Strong coupling in the N = 40 'island of inversion'
Document Type
article
Author
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
Source
Physics Letters B, Vol 784, Iss , Pp 392-396 (2018)
Subject
Language
English
ISSN
0370-2693
Abstract
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.− level sequence, connected by I→I−1 transitions, were established, the first time for 65,67Mn. Their level structures show features consistent with strongly-coupled rotational bands with K=5/2. State-of-the-art shell-model calculations with the modified LNPS effective interaction reproduce the observed levels remarkably well and suggest the dominance of 4-particle-4-hole neutron configurations for all the states. The data on the low-lying excited states of odd-mass 53−67Mn provide a textbook example of nuclear structure evolution from weak coupling through decoupling to strong coupling along a single isotopic chain on the n-rich side of the β stability line. These results help to deepen our understanding of the N=40 “island of inversion”. Keywords: In-beam γ-ray spectroscopy, “Island of inversion” around N=40, Strong coupling, Structure evolution