Nuclear structure of Te isotopes beyond neutron magic number $N=82$

B. Moon , A. Jungclaus , H. Naïdja , A. Gargano , R. Lozeva (1, 2) , C.B. Moon , A. Odahara , G.S. Simpson (3) , S. Nishimura , F. Browne , P. Doornenbal , G. Gey (3, 4) , J. Keatings , G. Lorusso , Z. Patel , S. Rice , M. Si (2) , L. Sinclair , P.A. Söderström , T. Sumikama , J. Taprogge , H. Watanabe , J. Wu , Z.Y. Xu , A. Yagi , D.S. Ahn , H. Baba , F.L. Bello Garrote , S. Bönig , R. Daido , J.M. Daugas (5) , F. Didierjean (1) , F. Drouet (3) , Y. Fang , N. Fukuda , R. Gernhäuser , B. Hong , E. Ideguchi , S. Ilieva , N. Inabe , T. Ishigaki , T. Isobe , H.S. Jung , D. Kameda , I. Kojouharov , T. Komatsubara , T. Kröll , T. Kubo , N. Kurz , Y.K. Kwon , C.S. Lee , P. Lee , Z. Li , A. Montaner-Pizá , S. Morimoto , K. Moschner , D. Mücher , D. Murai , M. Niikura , H. Nishibata , I. Nishizuka , R. Orlandi , H. Sakurai , H. Schaffner , Y. Shimizu , K. Steiger , H. Suzuki , H. Takeda , K. Tshoo , Zs. Vajta , A. Wendt , R. Yokoyama , K. Yoshinaga

1 IPHC - Institut Pluridisciplinaire Hubert Curien
2 IJCLab - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
3 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
4 ILL - Institut Laue-Langevin
5 DAM - Direction des Applications Militaires

Newly observed decay schemes of the nuclei Sb137 and Sb138 are reported. The neutron-rich Sb isotopes were produced by the in-flight fragmentation of a U238 primary beam with an energy of 345 MeV/nucleon. Several new excited states of Te137 with tentatively assigned spin-parities of (5/2−), (9/2−), and (7/2) have been established which play an important role in the evolution of neutron levels beyond N=82. The study of the β decay of Sb138 led to a considerable extension of the level scheme of Te138 including the identification of several nonyrast states. The structure of Te137 and Te138 is discussed on the basis of large-scale shell-model calculations performed using two different effective interactions.

Mots clés: Nuclear Structure

Domaines: Physique Nucléaire Théorique [nucl-th]

B. Moon, A. Jungclaus, H. Naïdja, A. Gargano, R. Lozeva, et al.. Nuclear structure of Te isotopes beyond neutron magic number $N=82$. Phys.Rev.C, 2021, 103 (3), pp.034320. ⟨10.1103/PhysRevC.103.034320⟩. ⟨hal-03191162⟩