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

AuthorsVogt, A.; Siciliano, M.; Birkenbach, B.; Reiter, P.; Gadea, Andrés ; Gelletly, W.; Giaz, A.; Görgen, A.; Jungclaus, Andrea ; MacChiavelli, A. O.
Issue Date24-Aug-2017
PublisherAmerican Physical Society
CitationPhysical Review C 96: 024321 (2017)
AbstractThe 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.
DescriptionA. Vogt et al. -- 14 pags., 10 figs.
Publisher version (URL)https://doi.org/10.1103/PhysRevC.96.024321
Identifiersdoi: 10.1103/PhysRevC.96.024321
issn: 2469-9993
Appears in Collections:(IFIC) Artículos
(CFMAC-IEM) Artículos
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