High-spin structures in Xe 132 and Xe 133 and evidence for isomers along the N=79 isotones

A. Vogt*, M. Siciliano, B. Birkenbach, P. Reiter, K. Hadyńska-Klȩk, C. Wheldon, J. J. Valiente-Dobón, E. Teruya, N. Yoshinaga, K. Arnswald, D. Bazzacco, A. Blazhev, A. Bracco, B. Bruyneel, R. S. Chakrawarthy, R. Chapman, D. Cline, L. Corradi, F. C.L. Crespi, M. CromazG. De Angelis, J. Eberth, P. Fallon, E. Farnea, E. Fioretto, C. Fransen, S. J. Freeman, B. Fu, A. Gadea, W. Gelletly, A. Giaz, A. Görgen, A. Gottardo, A. B. Hayes, H. Hess, R. Hetzenegger, R. Hirsch, H. Hua, P. R. John, J. Jolie, A. Jungclaus, V. Karayonchev, L. Kaya, W. Korten, I. Y. Lee, S. Leoni, X. Liang, S. Lunardi, A. O. MacChiavelli, R. Menegazzo, D. Mengoni, C. Michelagnoli, T. Mijatović, G. Montagnoli, D. Montanari, C. Müller-Gatermann, D. Napoli, C. J. Pearson, Zs Podolyák, G. Pollarolo, A. Pullia, M. Queiser, F. Recchia, P. H. Regan, J. M. Régis, N. Saed-Samii, E. Şahin, F. Scarlassara, M. Seidlitz, B. Siebeck, G. Sletten, J. F. Smith, P. A. Söderström, A. M. Stefanini, O. Stezowski, S. Szilner, B. Szpak, R. Teng, C. Ur, D. D. Warner, K. Wolf, C. Y. Wu, K. O. Zell

*Corresponding author for this work

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Abstract

The transitional nuclei Xe132 and Xe133 are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in Xe136+Pb208 MNT reactions employing the high-resolution Advanced GAmma Tracking Array (AGATA) coupled to the magnetic spectrometer PRISMA, (ii) in the Xe136+Pt198 MNT reaction employing the GAMMASPHERE spectrometer in combination with the gas-detector array CHICO, and (iii) as an evaporation residue after a Te130(α,xn)Xe134-xn fusion-evaporation reaction employing the HORUS γ-ray array at the University of Cologne. The high-spin level schemes are considerably extended above the Jπ=(7-) and (10+) isomers in Xe132 and above the 11/2- isomer in Xe133. The results are compared to the high-spin systematics of the Z=54 as well as the N=78 and N=79 chains. Furthermore, evidence is found for a long-lived (T1/2â‰1μs) isomer in Xe133 which closes a gap along the N=79 isotones. Shell-model calculations employing the SN100PN and PQM130 effective interactions reproduce the experimental findings and provide guidance to the interpretation of the observed high-spin features.

Original languageEnglish
Article number024321
JournalPhysical Review C
Volume96
Issue number2
DOIs
Publication statusPublished - 24 Aug 2017

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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