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Phys. Rev. C 71, 064321 (2005) [9 pages]

Level structure of odd-odd 134Sb populated in the β- decays of 134,135Sn

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J. Shergur1,2, A. Wöhr1,3, W. B. Walters1, K.-L. Kratz4, O. Arndt4, B. A. Brown5, J. Cederkall6, I. Dillmann4, L. M. Fraile6,7, P. Hoff8, A. Joinet6, U. Köster6, and B. Pfeiffer4
1Department of Chemistry, University of Maryland, College Park, Maryland, 20742-2021, USA
2Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
3Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556
4Institut für Kernchemie, Universität Mainz, D-55128 Mainz, Germany
5Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA
6ISOLDE, PH Department, CERN, CH-1211 Genève 23, Switzerland
7Departamento de Física Atómica Molecular y Nuclear, Universidad Complutense, E-28030 Madrid, Spain
8Department of Chemistry, University of Oslo, NO-1163 Oslo, Norway

Received 21 December 2004; published 28 June 2005

The level structure of odd-odd 134Sb has been studied at CERN/ISOLDE following the β- decay of 134Sn and the β-delayed neutron decay of 135Sn. Elemental and isobaric separation were accomplished by use of a resonance ionization laser ion source and an on-line mass separator, respectively. Both γ-ray singles and γ-γ coincidence data were taken as a function of time. New levels at 279, 441, 555, 617, and 1385 keV have been identified and given proposed spin and parity assignments of 7-, 5-, 6-, 4-, and 5-, respectively, following β-delayed neutron decay of 7/2- 135Sn. New 1- levels have been identified at 1900, 2170, and 2430 keV following the β- decay of 0+ 134Sn. The resulting level structures are compared to shell-model calculations using the CD Bonn interaction and scaled and unscaled Kuo-Herling interactions developed for the 208Pb region. Remarkably enough, the unscaled Kuo-Herling interaction provides the best fit for the levels below 1 MeV.


©2005 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.71.064321
DOI: 10.1103/PhysRevC.71.064321
PACS: 21.10.-k, 21.60.-n, 23.40.-s, 27.60.-j

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