Spectroscopy of $^{65,67}_{25}$Mn: Strong coupling in the $N = 40$ “island of inversion”
- Liu, X.Y.
- Liu, Z.
- Ding, B.
- Doornenbal, P.
- Obertelli, A.
- Lenzi, S.M.
- Walker, P.M.
- Chung, L.X.
- Linh, B.D.
- Authelet, G.
- Baba, H.
- Calvet, D.
- Château, F.
- Corsi, A.
- Delbart, A.
- Gheller, J.-M.
- Gillibert, A.
- Isobe, T.
- Lapoux, V.
- Matsushita, M.
- Momiyama, S.
- Motobayashi, T.
- Niikura, M.
- Nowacki, F.
- Otsu, H.
- Péron, C.
- Peyaud, A.
- Pollacco, E.C.
- Roussé, J.-Y.
- Sakurai, H.
- Sasano, M.
- Shiga, Y.
- Takeuchi, S.
- Taniuchi, R.
- Uesaka, T.
- Wang, H.
- Yoneda, K.
- Lam, Y.H.
- Huang, T.H.
- Sun, M.D.
- Zhang, W.Q.
- Lu, H.Y.
- Hou, D.S.
- Browne, F.
- Dombradi, Zs.
- Franchoo, S.
- Giacoppo, F.
- Gottardo, A.
- Hadynska-Klek, K.
- Korkulu, Z.
- Koyama, S.
- Kubota, Y.
- Lee, J.
- Lettmann, M.
- Lozeva, R.
- Matsui, K.
- Miyazaki, T.
- Nishimura, S.
- Louchart, C.
- Olivier, L.
- Ota, S.
- Patel, Z.
- Sahin, E.
- Santamaria, C.
- Shand, C.
- Söderström, P.-A.
- Stefan, G.L.
- Steppenbeck, D.
- Sumikama, T.
- Suzuki, D.
- Vajta, Zs.
- Werner, V.
- Wu, J.
- Xu, Z.
- Zhou, X.H.
- Zhang, Y.H.
- Xu, H.S.
- Zhang, F.S.
DOIAbstract
International audienceExcited states in 63,65,67 Mn were studied via in-beam γ -ray spectroscopy following knockout reactions from 68 Fe. Similar level schemes, consisting of the 11/2 − , 9/2 − , 7/2 − and 5/2 g.s.− level sequence, connected by I→I−1 transitions, were established, the first time for 65,67 Mn. 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 53−67 Mn provide a textbook example of nuclear structure evolut...
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