Masses of ground and isomeric states of $^{101}$In and configuration-dependent shell evolution in odd-$A$ indium isotopes

X. Xu , J.H. Liu , C.X. Yuan , Y.M. Xing , M. Wang , Y.H. Zhang , Yu.A. Litvinov , K. Blaum , R.J. Chen , X.C. Chen , C.Y. Fu , B.S. Gao , J.J. He , S. Kubono , Y.H. Lam , H.F. Li , M.L. Liu , X. W. , P. Shuai , M. Si , M.Z. Sun , X.L. Tu , Q. Wang , H.S. Xu , X.L. Yan , J.C. Yang , Y.J. Yuan , Q. Zeng , P. Zhang , X.H. Zhou , W.L. Zhan , S. Litvinov , G. Audi (1) , S. Naimi , T. Uesaka , Y. Yamaguchi , T. Yamaguchi , A. Ozawa , B.H. Sun , K. Kaneko , Y. Sun , F.R. Xu

1 CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière

We report first precision mass measurements of the 1/2− isomeric and 9/2+ ground states of In101. The determined isomeric excitation energy continues a smooth trend of odd-A indium isotopes up to the immediate vicinity of N=50 magic number. This trend can be confirmed by dedicated shell-model calculations only if the neutron configuration mixing is considered. We find that the single-particle energies are different for different states of the same isotope. The presented configuration-dependent shell evolution, type-II shell evolution, in odd-A nuclei is discussed for the first time. Our results will facilitate future studies of single-particle neutron states.

Mots clés: 21.10.Dr; 21.10.Pc; 27.60.+j; Nuclear Structure

Domaines: Physique Nucléaire Expérimentale [nucl-ex]; Physique Nucléaire Théorique [nucl-th]

X. Xu, J.H. Liu, C.X. Yuan, Y.M. Xing, M. Wang, et al.. Masses of ground and isomeric states of $^{101}$In and configuration-dependent shell evolution in odd-$A$ indium isotopes. Phys.Rev.C, 2019, 100 (5), pp.051303. ⟨10.1103/PhysRevC.100.051303⟩. ⟨hal-02223016⟩